Urethral Sounding: Is It Safe? Risks, Gear and Aftercare

Urethral sounding means easing a slim, smooth rod called a sound into the urethra, the tube you pee through, for pleasure. It's never fully safe: doctors have written up infections, tears, scarring and sounds that slipped into the bladder, and nobody has measured how often.

If you try it, sterilize your sound, use sterile single-use lube, begin small, never push, and learn the warning signs first.

What’s in this guide

• What is urethral sounding?
• Is urethral sounding safe?
• Hegar vs Guyon and other sounds
• What you need before you start
• How to clean and sterilize sounds
• How to try sounding, step by step
• Does sounding hurt?
• Sounding aftercare
• When to see a doctor
• What the research says
• Gear for sounding
• Urethral sounding FAQ
• The bottom line

What is urethral sounding?

Urethral sounding is putting a sound, a slim, smooth probe, into the urethra for pleasure. The urethra carries pee from your bladder to the outside: about 20 cm (7 to 8 inches) long in people with a penis, only 3 to 4 cm (about 1.5 inches) in people with a vulva (National Cancer Institute).

Sounds started as medical tools: Cleveland Clinic describes a urologist passing long, thin rods that grow thicker step by step to open a urethra narrowed by scar tissue. As a kink, it's about sensation, a medical-play edge and serious trust, with its own entry in our Kink List.

Why it's called sounding

Nothing to do with noise. A sound is a slim probe doctors use to explore the body, from the French sonde, a sailor's sounding line for measuring how deep the water goes. Merriam-Webster dates the instrument meaning to 1797.

Medical sounds vs sounding for pleasure

When doctors and nurses put a catheter into the urethra in a hospital, CDC's standard is clean hands, sterile gloves, sterile equipment and a single-use packet of lube. Home sounding can't match that, so every step below gets as close as it can. Love the white-coat feel? That's medical play, with real medical risks.

Why people try it

No study we found explains why sounding feels good, so here's what people describe:

• Fullness. A rod resting in the urethra fills your cock from a direction nothing else reaches.
• The urge to pee. Intense, strange, and for some people the whole point.
• The head and the tip, teased from the inside; with a vulva, the urethral opening just below the clit.
• The prostate. The urethra's first stretch out of the bladder runs through it, which is why deep sounding gets called prostate play, and why going deep is where the stakes rise.
• The head space. Slowness, focus, taboo and trust: you can't rush it, so all your attention lands in one small, sensitive place.

Prostate sensation has a gentler route: the prostate sits just in front of the rectum (Cleveland Clinic), where a finger or a prostate massager with a flared base reaches it with no rod in the urethra. Our best prostate massagers and anal orgasm guides take it from there.

How common is it?

Nobody knows. "Sparse data is available detailing the prevalence of urethral sounding in the population," as a 2025 case report in Cureus puts it. Two online surveys of specific groups give the only figures: 10.7% of 2,122 men who have sex with men had tried sounding (BJU International, 2012), and 33 of 354 men with genital piercings used sounds (Urology, 2010). Neither covers people in general.

Is urethral sounding safe?

No kind of urethral sounding is risk-free. Is sounding dangerous? It can be: doctors have documented infections, tears and bleeding, scarring, sounds lost in the bladder and, rarely, a hole in the bladder, and nobody knows how often. There's no perfectly safe sounding, only safer sounding.

What can go wrong: the dangers of sounding

A 2024 review in Urology Case Reports lists what doctors see: objects stuck in the urethra or bladder, tears, bleeding, infections and, after repeated injury, scarring.

Risk	What it means	Your best moves	Source
Urinary tract infection	Burning, urgency, cloudy or bloody pee; fever or back pain if it reaches the kidneys	Sterilized sound, sterile lube, clean hands, pee after	CDC, NHS, MedlinePlus
Tears and bleeding	Bleeding from the tip, pain, painful peeing	A small size, plenty of lube, no force	BMJ Case Reports 2012, Urology Case Reports 2024
False passage	A tear opens a wrong track off the real channel	Never push past resistance	The same two reports
Scarring (stricture)	Later, sometimes much later: a weaker or spraying stream	Gentle sessions, days off between	The same two reports; Cleveland Clinic, MedlinePlus
Sound lost in the bladder	It slips past your grip and usually needs a scope to come out	Keep hold of the end, stay shallow	Cureus 2025, Hong Kong Medical Journal 2019, Urology Case Reports 2024
Hole in the bladder (rare)	Usually sharp objects; in one case, a blunt pen; open surgery	Never improvise; never sound drunk or high	Journal of Surgical Case Reports 2023
STIs (a link, not proof)	More STIs among men who sounded, in one survey	Safer-sex habits; never share sounds	BJU International 2012, Cureus 2025

A sound carries whatever is on it, or on you, straight in, and CDC says UTIs start when bacteria, often from the skin or rectum, get into the urethra. Scarring is slower: Cleveland Clinic says injury and instruments in the urethra can leave scar tissue that narrows it; the most common sign is a weaker stream, and it can show up soon after an injury or long after. Urologists who saw a man bleeding after sounding (BMJ Case Reports, 2012) warn that repeated sounding can scar the urethra and tear false passages.

How often do problems happen?

Nobody knows. Case reports can't count the people who sounded without trouble, and surveys only hear from people who chose to answer: the 2010 piercing survey found few problems, including five urinary infections, but men who had a bad time may simply not have answered.

Who should skip sounding

Skip sounding if you get urinary infections, have a weakened immune system, are pregnant or have a known problem with your urethra (Cureus, 2025). The listing for the steel set we sell adds that anyone with a urinary condition should check with a doctor first. Our own rules:

• Never drunk or high. In a 2023 case report (Journal of Surgical Case Reports), an intoxicated woman needed open surgery after a blunt marker pen went through her bladder wall.
• Nothing going on down there. Burning, discharge or a sore: get checked first.

Hegar vs Guyon and other sounds

How does Guyon sounding differ from Hegar sounding? Hegar sounds are straight or slightly curved, graded rods in millimeters, often double-ended, from gynecology. Guyon sounds are single rods with a handle and a hooked tip, sized in French, made for urology.

Type	Shape	Sized in	Named after	What to know
Hegar	Straight or slightly curved steel rod, often double-ended	Millimeters, 1 mm steps	Alfred Hegar (1830 to 1914), gynecologist	Made to open the cervix; no flared stop
Guyon	Single rod, small flat handle, hooked tapered tip	French; old sets used Béniqué numbers	Félix Guyon (1831 to 1920)	Urology instrument to explore and measure the urethra
Van Buren	Single rod, flat handle, gently curved tapered end	French, for example 14 to 24 Fr	William Holme Van Buren (1819 to 1883)	A gentler curve than a Guyon
Silicone	Flexible rods made as toys	Varies	n/a	One urologist prefers them for beginners

Hegar sounds

Alfred Hegar was a gynecologist who used dilators that grew one millimeter at a time to open the cervix; colleagues saw them in his clinic in 1879. Many sets are double-ended, like 5 mm and 6 mm (Science Museum Group). Many sounding sets copy this design, ours included, and it has no flared stop: one museum Hegar dilator is 210 mm long, about as long as the whole urethra in a person with a penis. Keep hold of the outer end, always.

Guyon and Van Buren sounds

Guyon sounds are single metal rods with a small, flat, round handle and a curved, hooked, tapered tip, as a set in the University of Minnesota's medical history library shows. Today's are sold to doctors as reusable urology instruments in French sizes, arriving unsterile with steam or gas sterilizing instructions. Van Buren sounds curve more gently. Both curves steer deeper, past the bend before the prostate where urologists warn most injuries happen.

Sizes: millimeters vs French

Medical sounds are often sized in French (Fr, or Ch after Charrière, a Paris instrument maker). Divide by three for millimeters: 9 Fr is about 3 mm, 30 Fr about 10 mm. A graded steel set like ours runs 3 to 18 mm, about 9 to 54 Fr.

Smaller is gentler: even CDC's catheter advice suggests the smallest tube that does the job, to limit damage to the urethra. Start with one of the smallest sizes that slides in under its own weight, though not the very thinnest, which urologists warn can wobble and poke.

No prize for size or depth. If a sound won't slide in by itself, it isn't your size today.

Steel or silicone?

Both are made for sounding; neither is risk-free. One urologist prefers silicone over metal, especially for beginners; our Hegar set is steel. Either can slip: the purpose-made sounds lost in the 2025 and 2019 case reports were both silicone.

Never use these

• Improvised objects: pens, cotton swabs, wires, anything not made for sounding.
• Magnetic beads. In the bladder they can snap into a clump that can't come back the way it went in (American Journal of Case Reports, 2019).
• Glass or anything breakable. Urologists warn against it.
• Homemade tubing. In the 2019 Hong Kong Medical Journal report, it ended in weeks of fever and an abscess.
• Catheters or anything powered. Catheters are medical devices, and rods that buzz, inflate or carry a current add risk you don't need.

What you need before you start

• A sound made for sounding: smooth, rounded tips, no nicks, like the graded steel set in our BDSM toys and bondage gear.
• Sterile, single-use, water-based lube in fresh packets.
• Clean hands and fresh disposable gloves, which beat bare hands.
• A clean towel, privacy, time and a sober head.
• A plan for trouble: read the red flags and know where your nearest ER is.

Lube: sterile, single-use, water-based

Urologists recommend sterile, single-use lube packets for sounding. No clinical guideline exists for recreational sounding, but that matches the hospital standard for catheters: a sterile kit with a single-use packet of lubricant jelly (CDC). A regular bottle of lube, ours included, isn't sold as sterile, so save it for the rest of the night. Skip glycerin, parabens, numbing agents, scents and oils; numbing is the worst, because pain is your warning to stop.

We don't stock sterile single-use lube; pharmacies and medical-supply stores do. Spit isn't lube either: urologists say so plainly.

Never share sounds

Urologists writing in Cureus in 2025 say outright that sounds shouldn't pass between people or partners. Couples who share everything else still get a set each.

How to clean and sterilize sounds

Clean and sterile aren't the same thing: cleaning removes what you can see, sterilizing is meant to kill what you can't. Your cleaning routine for a urethral sounding kit, every session:

1. Wash the rod and both tips with hot water and soap or a foaming toy cleaner, then rinse.
2. Inspect for nicks or rough spots. A damaged sound goes in the trash, not in you.
3. Sterilize it with the best home method your sound's maker allows, even if it's been sitting clean.
4. Handle it clean: clean hands or fresh gloves, fresh towel.
5. Afterward, wash it, dry it and case it.

The honest part: boiling is what most sounding guides suggest for steel, but it isn't on CDC's list of sterilization methods; hospitals sterilize instruments with steam under pressure, dry heat or gas. Boiling is the most you can do at home, not the same thing. Alcohol and iodine count only as disinfectants, and a toy cleaner isn't a sterilizer (the one we sell says so on its listing).

Clean isn't sterile, and home-sterile isn't hospital-sterile. Do all of it anyway.

How to try sounding, step by step

A gentle first session for people with a penis; people with a vulva and partners have sections below. Read the red flags first.

1. Prep. Pee first, so the urge to pee later is only a feeling. Wash your hands and your cock, under the foreskin too.
2. Set up clean: gloves on, sterilized sound on a fresh towel, lube packet in reach, good light.
3. Soft or partly hard. No erection needed; guides differ on which is easier, so go with whatever lets the sound slide in.
4. Lube both, the sound and the opening at the tip.
5. Straighten up. Hold the shaft gently upright or straight out so the urethra runs in a line.
6. Let it sink. Rest the rounded tip at the opening and let it slide in under its own weight; urologists say never push. If it stops, you stop.
7. Stay shallow, keep hold. Keep the outer end between finger and thumb the whole time, and never let go. Urologists warn most injuries happen at the bend just before the prostate, so stay well short of it.
8. Feel it. Hold still: fullness, the urge to pee, a tingle at the head. Any movement stays tiny and slow.
9. Stop at resistance, sharp pain or blood.
10. Ease it out the way it went in, adding lube to the rod if it drags. House rule: it comes out before you come.
11. Pee soon after. It's the NHS's standard after-sex advice for lowering UTI risk, and it rinses lube out.

Next time, change one thing at most: a slow, shallow glide instead of stillness, or a partner's hand on the sound while you call the depth. Layer in sensations that don't move your hips: kissing, nipple play, dirty talk in your ear.

When it isn't working

• It won't go in. Don't push. More lube, a slower breath, one more try, then call it a night.
• It stings or burns. Sharp or burning pain means stop. Try another day, or never.
• Your erection changes. If the sound stops sliding freely, take it out.
• It does nothing for you. That's an answer, not a failure. Try our sex toys for men or male orgasm guide instead.

For people with a vulva

You can try it too, carefully. Your urethra is only 3 to 4 cm (about 1.5 inches) long (National Cancer Institute), and CDC says it's shorter and closer to the rectum, so UTIs come more easily.

• Find it: between your clit and your vaginal opening; a hand mirror helps.
• Short sounds, shallow play, firm grip. In a 2025 case report, a woman who sounded regularly lost a 12 cm silicone sound into her bladder during sex. She went to the ER within hours, doctors took it out with a scope, and she went home the same day.
• Wash between holes: never ass or vagina to urethra without washing fingers, gloves or toy first.

With a partner

Bring it up outside the bedroom: "I've been reading about sounding. It turns me on, and I'd love to talk about it." Send them this guide first. Not sure where they stand? Do the Kink Test side by side, since in couples mode it only reveals yeses you both gave, or go down the yes, no, maybe list and the Kink List together.

• An enthusiastic yes from the person being sounded; maybe means not tonight.
• They set depth and pace, even in a doctor role-play.
• A stop word plus a tap, like two firm taps on the arm; either ends it on the spot.
• Check in out loud: "Still good? More, less, or out?"
• Sober, both of you, and never sound someone who can't speak up.
• Consent can change mid-scene, whatever your dynamic.

Into the white coat? Read up on medical play first; the scene can be as clinical as you like, but the safety rules stay put.

Does sounding hurt?

It can, and pain is information. Going well, people describe it as strange, full and intense, with a strong urge to pee. Sharp, burning or tearing pain means stop, and never use numbing lube to push past it.

Pain that doesn't settle needs a doctor. Pain that gets worse when you pee means the ER: Cleveland Clinic lists it among its reasons to go.

Sounding aftercare

• Pee soon after, then drink some water so you go again soon.
• Clean your gear: wash, dry and case the sound.
• Know what's normal: many people notice a mild sting the first time or two they pee, fading the same day.
• Watch the next few days. Burning, urgency, bloody pee or pressure low in your belly can mean a bladder infection; fever, chills, nausea or back or side pain, a kidney infection, the more serious kind. See a doctor for any of them (CDC).
• Rest. Leave days, not hours, between sessions; urologists link repeated sounding with scarring.
• Look after each other: stay close, talk it over, check in the next day.

When to see a doctor

Don't let embarrassment slow you down: putting things in the urethra for pleasure "is not uncommon, especially in men," a 2019 Hong Kong Medical Journal report notes.

Do this	If you notice	Source
ER now	You need to pee and can't, only a trickle comes out, or peeing hurts more each time	Cleveland Clinic
ER now	A sound or any piece of one slips past your grip or won't come out	Case reports; urologists
ER now	Heavy bleeding, or bleeding that won't stop	Our advice; Cleveland Clinic
Same day (urgent care or your doctor)	Fever, chills, nausea or vomiting, back or side pain	CDC, NHS
See a doctor	Burning, urgency, cloudy pee, pressure low in your belly	CDC, NHS
See a doctor	Any blood in your pee, even once	NHS
See a doctor	Pain that doesn't settle	Our advice
See a doctor	Discharge, a swollen penis, blood in your semen	MedlinePlus
See a urologist	Later, even long after: a weaker or spraying stream, straining	Cleveland Clinic, MedlinePlus, StatPearls
Tell them everything	What went in, how far, when, whether anything is missing	Cureus 2025
Usually fine	A mild sting the first time or two you pee, fading the same day	Commonly reported

If a sound gets stuck

Don't dig. Go to the ER now and tell them exactly what went in. Urologists warn that smooth objects can slide deeper, into the bladder, where you can't get them back yourself. In the 2019 Hong Kong report, a commercial silicone sound came out through a flexible camera scope and the man went home the same day; the authors note a late visit may mean more imaging and more complex surgery.

What the research says

Every study behind this guide. Most are case reports: they show what can happen, not how often.

Study	Who	What it found	Limits
Breyer and Shindel, 2012 (BJU International)	2,122 men who have sex with men, online survey	10.7% had tried sounding; more partners and STIs; slightly higher urinary symptom scores	Self-selected; links, not proof
Rinard and colleagues, 2010 (Urology)	354 men with genital piercings, online survey	85 did penile or urethral play; 33 used sounds; few problems reported (5 urinary infections, 4 irritation)	Small; self-report
Kuroki and colleagues, 2025 (Cureus)	One woman	A 12 cm silicone sound slipped into her bladder; removed with a scope; no damage	One case
Lindsay, 2019 (Am J Case Rep)	One man	60 magnetic beads clumped in the bladder; removed under anesthesia	One case
Reztsova and colleagues, 2023 (J Surg Case Rep)	One woman	A marker pen went through the bladder wall; open surgery	One case
Kwong and Larner, 2012 (BMJ Case Reports)	One man	Bleeding after sounding; settled without surgery	One case
Mak and colleagues, 2019 (Hong Kong Med J)	Three adults	Retained objects, one a commercial silicone sound; an abscess after homemade tubing	Three cases
Emerson and colleagues, 2024 (Urology Case Reports)	Literature review	Retained objects, tears, bleeding, infection; scarring after repeated injury	Case reports only

What nobody has studied: how often sounding leads to problems, what regular sounding does over years, whether sterile lube or home sterilizing lowers infection risk, safe sizes, depths or frequency (every number online is hobbyist advice), and how many people sound at all. So this guide never hands you a "safe" depth, size or schedule.

Gear for sounding

Two things from our shelves, and what we don't carry.

Pick	Best for	Price
Rouge Hegar Sound Set, 8 Piece	A graded steel set, 3 to 18 mm	$69.95
JO Refresh Foaming Toy Cleaner	The wash before you sterilize	$15.95

Rouge Stainless Steel Hegar Urethral Sound Set, 8 Piece

Eight double-ended stainless steel Hegar sounds with rounded tips, so each rod gives you two sizes, from 3 mm to 18 mm (about 9 to 54 Fr) in small, deliberate steps. Leather case, made in the UK. That range lets you find one of the smallest sizes that slides in under its own weight.

The candid part: Hegar rods have no flared stop, so keep hold of the outer end. They're steel, not the silicone one urologist prefers for beginners, and they need sterile lube we don't sell. Its listing's safety line asks you to sterilize the set before each session, use sterile water-based lube, never force anything, quit the moment there's pain or bleeding, and get a doctor's okay first if you have a urinary condition. $69.95.

Get the Rouge Hegar Sound Set here.

JO Refresh Foaming Toy Cleaner

The wash step, made easy: foam up the whole sound, let 60 seconds pass, then rinse under water. It's listed as safe for latex, rubber and silicone toys and most other materials, leaves no residue, has no fragrance and is free of parabens and triclosan; 7 oz pump bottle, made in the USA. Its listing is honest: a cleaner isn't sterilization, and anything that must be sterile, urethral sounds included, needs its maker's sterilizing instructions. $15.95.

Get the JO Refresh Foaming Toy Cleaner here.

What we don't stock: sterile single-use lube, disposable gloves or silicone sounds; pharmacies and medical-supply stores carry the lube and gloves. More kink gear lives in our BDSM toys and bondage gear.

Urethral sounding FAQ

Is urethral sounding safe?

Urethral sounding is never risk-free. Doctors have documented infections, tears and bleeding, false passages, scarring, sounds lost in the bladder and, rarely, a hole in the bladder, and nobody knows how often those happen. What you control: sterilized gear made for the job, sterile lube, no force and staying shallow.

What are the dangers of sounding?

The documented dangers are urinary tract infections, tears and bleeding, false passages (small wrong tracks torn off the urethra), scarring that narrows it, sounds slipping into the bladder and, rarely, a hole in the bladder. One survey also linked sounding with more STIs, a link rather than proof.

Is penile sounding dangerous?

It can be. People with a penis have a longer urethra, about 20 cm, running through the prostate, and urologists warn the bend just before the prostate is where most injuries happen. Stay shallow, or reach the prostate through the rectum with a flared-base prostate massager.

Is urethral sounding healthy?

No. No source shows sounding does your body any good, and at home it isn't a medical procedure. Doctors use sterile sounds to open a urethra narrowed by scar tissue. People sound because they like how it feels, which is reason enough if you know the risks.

How does Guyon sounding differ from Hegar sounding?

Hegar sounds are straight or slightly curved steel rods graded in millimeters, often double-ended, named after the gynecologist Alfred Hegar. Guyon sounds are single rods with a small flat handle and a curved, hooked, tapered tip, named after Félix Guyon and sold as urology instruments sized in French. Many sounding sets copy the Hegar design.

Why is it called sounding?

Because a sound is a probe, not a noise. The word comes from the French sonde, a sounding line for measuring how deep water goes, and Merriam-Webster dates the instrument meaning to 1797. The kink borrowed the name, the rods and the medical feel; see its Kink List entry.

Is sounding painful?

It can be, and sharp or burning pain means stop. Going well, people describe it as strange, full and intense, with a strong urge to pee, and many notice a mild sting the first time or two they pee afterward. Skip numbing lube, which hides the warning; pain that doesn't settle needs a doctor.

What lube should you use for sounding?

Sterile, single-use, water-based lube from a fresh packet. Urologists recommend single-use sterile packets, in line with the hospital standard for catheters. Skip glycerin, parabens, numbing agents, scents and oils. A regular bottle isn't sold as sterile, ours included; pharmacies and medical-supply stores carry packets.

Can you do sounding without lube?

No. Dry friction against your urethra's lining invites the tears and bleeding on the list of documented risks. Use sterile, single-use, water-based lube on the sound and the opening, adding more to the rod if it drags. Spit doesn't count: urologists say it isn't lube.

How do you sterilize sounding rods?

Wash first, then sterilize the way your sound's maker says, before every session. Boiling is what most sounding guides suggest for steel, but it isn't on CDC's list of sterilization methods; hospitals use steam under pressure, dry heat or gas. Alcohol and iodine only disinfect, and a toy cleaner only cleans.

What are the safest materials for urethral sounds for beginners?

Smooth sounds made for the job, in stainless steel or silicone, with rounded tips and no nicks; neither is risk-free. One urologist prefers silicone for beginners; classic Hegar sounds, ours included, are steel. Never glass, magnetic beads or anything improvised like pens, wires or cotton swabs.

What size sound should a beginner start with?

One of the smallest sizes that slides in under its own weight, though not automatically the very thinnest: urologists warn those can wobble and poke. A graded steel set like ours starts at 3 mm (about 9 Fr). Smaller is gentler, and there's no prize for going up.

What is sounding aftercare?

Pee soon after, drink some water, wash and dry your sound, and watch your body for a few days. A mild sting the first time or two you pee is commonly reported; burning, urgency, bloody pee, fever, chills or back pain mean a doctor. Leave days between sessions.

What should you do if a sound gets stuck?

Go to the ER now and don't dig: urologists warn smooth objects can slide deeper, into the bladder. Tell the doctors exactly what went in, how far and when. In two published cases, a scope got the sound out and both people went home the same day.

Can people with a vulva try sounding?

Yes, carefully. The urethra in people with a vulva is only 3 to 4 cm (about 1.5 inches) long, and CDC says it's shorter and closer to the rectum, so UTIs come more easily. Use short sounds, stay shallow, keep hold of the end, and wash between your ass or vagina and your urethra.

The bottom line

Urethral sounding is an intense kink borrowed from medicine, and it's never risk-free. Control what you can: sterilized gear made for the job, never shared; sterile single-use lube; no force, shallow depth, a firm grip; fast help when something's wrong.

Chasing prostate sensation? Take the gentler road with our anal orgasms guide and the best prostate massagers. For more, read the sounding and medical play entries in our Kink List.

This guide is general information, not medical advice. Sources: CDC, Cleveland Clinic, MedlinePlus, StatPearls (NIH), the National Cancer Institute, the NHS and the studies named above (2010 to 2025).

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Maya Sterling, AdultLuxe editorial. Read our editorial standards.