How to use a bidet: a plain walkthrough for every type, seated position, and the hygiene question

By Ariel, last updated August 12, 2026.

Learning how to use a bidet takes one sitting. The mechanics are simple: you stay seated, water rinses front to back, you run it for under a minute, then you pat dry. Almost everyone who hesitates is stuck on two things nobody explained to them, which button starts the wash and whether the water is clean. Both have short answers, and I will get to them below.

I fit bidets for a living, mostly seats and attachments on existing toilets, and the number-one service call is not a leak. It is someone who bought a good unit, could not figure out the controls, and left it unused for a month. This guide fixes that. If you have not bought yet, see our best bidet toilet seats roundup first, and if you are mid-install, the companion piece is how to install a bidet.

TL;DR

• Four kinds of bidet exist and they work slightly differently: a standalone porcelain fixture (a separate basin), a clamp-on attachment, a non-electric bidet seat, and an electric washlet seat. The seat and attachment kinds all wash you while you stay seated on the toilet. Do not straddle a seat-style bidet.
• Start the wash at the lowest pressure and raise it. High pressure first is the most common beginner mistake and it is unpleasant.
• Rear wash for after a bowel movement, front (feminine) wash for a gentler front rinse. On a seat you pick these with separate buttons; the nozzle aims itself.
• Run it about 20-60 seconds. Then air-dry with a dryer if the seat has one, or pat with a small square of toilet paper.
• Is it sanitary: yes, in the mechanical sense that matters here. Water sprays front to back, the nozzle sits behind the bowl rim and never touches you, and modern seats rinse the wand before and after every use. This is a fixtures walkthrough, not medical advice.

The four kinds of bidet, and how each one actually works

Before the button-pushing, it helps to know which device you are sitting on, because the motion is different for each.

A standalone bidet fixture is the old-world version: a separate porcelain basin next to the toilet, with its own faucet and drain, that looks like a low sink. You use the toilet first, then move over to the bidet and wash. You either straddle it facing the faucet (handy for reaching the controls and directing water by hand) or sit facing away. Water comes up from a spray in the bowl or from the faucet, and you often guide it with your hand. These are common in Europe and rare in new US homes, so most readers here will never own one, but you will meet them in hotels.

A bidet attachment clamps onto your existing toilet, sliding in between the bowl and the seat. It has no seat of its own; you sit on your regular toilet seat and a thin nozzle bar sits below it. A control dial on the side turns the water on and swings a nozzle out under you. Non-electric ones like the Tushy Classic 3.0 run on your cold water line only, so the water is room temperature. This is the cheapest way in and the one most first-timers try.

A non-electric bidet seat replaces your toilet seat entirely but still uses no electricity. You get a proper seat with a built-in nozzle and a side control panel, tee’d off the cold supply. Some route through the sink hot line for warm water. Brondell’s Ecoseat line is a common example.

An electric bidet seat, also called a washlet after the TOTO brand name, is the full version: a heated seat, warm water from an internal heater, adjustable pressure and temperature, a warm-air dryer, often a deodorizer, and either side buttons or a wireless remote. The TOTO Washlet S5 (model SW3446) and the Brondell Swash line are typical. Everything is powered, so it needs a nearby GFCI outlet.

For the rest of this guide, the attachment and both seat types are grouped together as “seat-style,” because you use them the same way: seated on the toilet, water rinsing from behind. The standalone fixture is the odd one out and gets its own short section.

How to use a bidet seat or attachment, step by step

This covers attachments, non-electric seats, and electric washlets. The buttons differ but the sequence is identical.

Step 1: Do your business first, then stay seated

Use the toilet normally. When you are done, do not stand up. The whole point of a seat-style bidet is that it washes you where you already are. Standing and leaning over is the failure I see most: people treat the seat like a standalone fixture and end up spraying the wall.

Sit squarely, weight centered, buttocks over the middle of the seat. On a seat with a body sensor, and most electric ones have one, the wash will not start at all unless it detects you sitting. That is a safety feature, not a broken unit.

Step 2: Start the wash at the lowest pressure

Find the control. On an attachment it is a dial on the right side. On a non-electric seat it is a lever or knob on a side panel. On an electric seat it is either side buttons or a remote with clearly labeled REAR and FRONT.

Set pressure to the lowest setting before you begin. Then press rear wash (or turn the attachment dial to the wash position). A properly designed nozzle rinses itself, extends, and begins spraying. The first second or two on a non-heated unit is cold; on a heated seat it arrives warm if you set the temperature.

Turning the pressure to maximum on the first try is the classic mistake. Low first, then nudge it up until it is doing the work without being harsh.

Step 3: Choose rear wash or front wash

Rear wash is the after-a-bowel-movement clean. The nozzle aims at your backside and the water rinses front to back, which is the direction you want. Give it a moment; the spray does the work, you do not need to reach or wipe while it runs.

Front wash, sometimes labeled feminine wash or “bidet,” uses a gentler, more forward spray for a front rinse. On seats with two nozzles or a repositioning nozzle, the front wash is softer and aimed differently. Anyone can use rear wash; front wash is there when you want it.

Some electric seats add an oscillating or pulsing mode that moves the nozzle back and forth to cover a wider area. Handy, not essential.

Step 4: Set the water temperature (heated units only)

On an electric seat, set the temperature to warm, not hot. Body-temperature water is comfortable and does the same cleaning job as anything hotter. Cranking it to the top setting is a way to get startled and, over time, to run the heater harder than it needs to.

Non-electric units give you whatever your supply line delivers. If yours tees off the cold line only, expect cool water; you get used to it faster than you would think. Units plumbed to a hot line give you a mix.

Step 5: Run it about 20 to 60 seconds

Twenty seconds is plenty for a light clean. Up to a minute for a thorough one. You will feel when you are clean. There is no prize for running it longer, and a very long wash on a cold-water attachment is just cold.

Press stop, or turn the attachment dial back to off. On most seats the nozzle retracts on its own and rinses itself again on the way in.

Step 6: Dry off

If your seat has a warm-air dryer, press it and give it a minute or two. Dryers are slower than people expect, so many owners still finish with paper.

Otherwise, pat dry with a small folded square of toilet paper, or use a dedicated cloth towel kept just for this (fold it, pat, do not scrub, and launder it like a hand towel). You are patting off water, not wiping away mess, so you use a fraction of the paper you used to. Expecting the bidet to eliminate paper entirely is the third common misunderstanding: it drastically reduces paper, it does not always erase it.

How to use a standalone porcelain bidet fixture

Different device, different motion. You have already used the toilet; now you move to the bidet basin beside it.

Straddle the bidet facing the faucet if you want to control the water by hand and see what you are doing, or sit facing away for a more seated position. Turn on the water and check the temperature at the faucet the way you would at a sink, warm, not hot, before it reaches you. Many fixtures fill the basin or send water up through a spray in the bowl; some you simply cup water from with your hand. Wash front to back, rinse, then dry with the towel that lives on the ring beside it (in a hotel, that is what the small towel near the bidet is for).

A standalone fixture does not clean the way a pressurized nozzle does, and it needs its own hot and cold supply plus a drain, which is why almost nobody adds one to a US bathroom today. If you are choosing between fixtures for a real bathroom, a seat or a bidet toilet combo does more in less space.

Is a bidet sanitary? The honest mechanical answer

This is the question that stops people, so here is the plain version, kept to what the hardware actually does.

The water sprays from behind and rinses front to back. That direction is the reason a rear wash does not drag anything forward. The nozzle sits tucked under the back of the seat, behind the bowl rim, and it does not touch you; it sprays from a short distance. On attachments and seats, the wand is a smooth plastic bar, not something that goes anywhere near contact.

Modern seats and most attachments have a self-cleaning nozzle that rinses the wand with fresh water before it extends and again after it retracts. Brondell, Bio Bidet, Tushy, and TOTO all build some version of this in. The water itself is your home’s regular potable supply, the same water that comes out of the tap.

What a bidet does not do is sterilize anything, and I am not going to pretend it is a medical device. It rinses with clean water, front to back, from a nozzle that never touches you and cleans itself between uses. Whether that is better for any particular skin or health situation is a question for a clinician, not a fixtures guide. If you want the nozzle to stay clean long-term, wipe it down monthly and let the self-clean cycle do the daily work; our install guide covers the maintenance side.

Common mistakes people make with a new bidet

• Full pressure on the first press. It is startling and it can sting. Always start low.
• Standing up and leaning over a seat-style unit. You spray the room. Stay seated; the nozzle comes to you.
• Straddling a bidet seat like it is a standalone fixture. A seat washes you sitting down. There is nothing to straddle.
• Expecting zero toilet paper. A bidet cuts paper use hard, but you still pat dry with a little paper or a towel. Anyone promising you the end of paper entirely is overselling.
• Leaving an electric seat on maximum heat. Seat and water on the hottest setting wastes energy and is less comfortable than warm. Set it to warm and forget it.
• Wrong nozzle mode. Using front (feminine) wash when you mean rear wash, or the reverse, is a common early mix-up. Rear is the after-a-bowel-movement clean; front is the gentler front rinse. The labels are usually right on the button.

What this guide will not tell you to do

• Do not use a garden-style handheld sprayer as a bidet on hot water. Cheap handheld “bidet sprayers” tee off the toilet’s cold fill only and are fine as cold sprayers, but people rig them to hot lines without a mixing valve and scald themselves. If you want warm water, buy a unit built for it.
• Do not run an electric seat off an extension cord or a non-GFCI outlet. Water and power belong on a GFCI circuit. This is covered in the install guide and it is not optional.
• Do not trust a bidet to replace hand washing. It cleans you; you still wash your hands after, same as always.
• Do not scrub the nozzle with abrasive cleaners. Wipe it with a soft damp cloth. Harsh pads scratch the plastic and wreck the self-clean seal.

FAQ

How do bidets work?

A bidet directs a stream of clean water at your backside or front to rinse you after using the toilet. On a seat or attachment, a nozzle extends from behind the bowl rim and sprays front to back while you stay seated. On a standalone porcelain fixture, water comes from a faucet or a spray in a separate basin and you wash over it. In every case it is your home’s regular potable water, adjustable for pressure and, on heated units, temperature.

How do I use a bidet correctly after pooping?

Stay seated on the toilet after you finish. Set pressure to low, press rear wash (or turn the attachment dial), and let the water rinse front to back for about 20 to 60 seconds. Raise the pressure a little if you need more. Press stop, then pat dry with a small piece of toilet paper or a dedicated towel, or use the warm-air dryer if your seat has one.

Are bidets sanitary?

In the mechanical sense that matters for a fixture, yes. The water sprays front to back so nothing is dragged forward, the nozzle sits behind the bowl and does not touch you, and modern seats and attachments rinse the nozzle with fresh water before and after each use. The water is your normal tap supply. A bidet is not a medical device and does not sterilize; for health questions, ask a clinician.

Rear wash vs front wash, which do I use?

Rear wash is the standard clean after a bowel movement and works for everyone. Front wash, sometimes labeled feminine or “bidet” wash, is a gentler, more forward spray for a front rinse and is optional. On electric seats these are separate labeled buttons and the nozzle aims itself, so you never reposition anything by hand.

Do I still need toilet paper if I have a bidet?

Usually a little, yes. The bidet does the cleaning; the paper or towel just dries you off afterward, so you use far less than before. Seats with a warm-air dryer can get you close to paperless, but the dryer is slow and many owners still finish with a small square of paper. Anyone promising a complete end to toilet paper is overselling it.

Is the water cold?

On a non-electric attachment or seat tee’d off the cold line only, yes, the water is room temperature and cool, and most people adjust within a week. Non-electric units plumbed to a hot line, and all electric washlets with an internal heater, give you warm water. On heated units, set the temperature to warm rather than hot; body temperature cleans just as well and is more comfortable.

Why will my electric bidet seat not spray?

Most electric seats have a body sensor and will not run the wash unless they detect someone sitting on the seat, so it will not spray if you press the remote while standing. Sit down first. If it still will not spray while seated, check that the unit is powered on, the water supply valve is open, and, on remote models, that the remote has working batteries.

Sources & references

• TOTO WASHLET S5 product page, totousa.com. manufacturer operation guide for front wash, rear wash, pressure and dryer controls
• Brondell Swash bidet seat support and FAQ. front vs rear wash, temperature and pressure settings, body sensor behavior
• Bio Bidet self-cleaning nozzle and cleaning guide. how the self-cleaning nozzle cycle works and how to maintain it
• TUSHY customer support: how to use the Classic 3.0 attachment. non-electric attachment operation and self-cleaning nozzle

See also on My Best Toilet

• How to install a bidet. the companion install walkthrough for attachments and electric seats, including the GFCI and water-supply setup this guide assumes is done
• Best bidet toilet seats. our picks for electric and non-electric seats if you have not bought one yet
• Best bidet toilet combos. integrated toilet-and-bidet units if you are remodeling rather than retrofitting a seat