The complete guide
How To Choose A Silicone Tub Drain Hair Catcher
The problem nobody notices until it is too late
A clogged tub rarely announces itself. One week the water drains a little slower than usual. The next week it pools around your feet for a minute after you turn off the faucet. By the time you are standing in several centimetres of grey water, there is a dense plug of hair and soap residue sitting somewhere in the pipe below, and getting it out is a job nobody enjoys.
Hair is almost always the culprit. On its own a single strand is nothing. In a drain it behaves differently. Strands catch on the crosspiece of the drain, tangle around each other, and start collecting the fatty residue from soap, conditioner and body wash. That mix hardens into something closer to felt than fluff. Once it forms, water has to squeeze past it, and every shower after that makes it slightly worse.
The fix is almost comically simple. Stop the hair at the surface. A flat silicone drain strainer sits over the drain opening and catches the strands before they ever get into the pipe. You see the hair, you lift it off, you throw it in the garbage. The pipe stays clear because nothing reached it.
How a flat silicone strainer works
This one is a soft silicone disc, 11.4 cm wide and about 0.5 cm high, with a circular perforated pattern punched across the surface. The holes are sized to let water through while hair spans across them and stays on top. There are no moving parts and nothing to assemble.
Water finds its way through dozens of small openings rather than one big one. That is the whole design principle. A single large hole passes water fast but passes hair just as fast. Lots of small holes slow nothing noticeably, but hair cannot thread through them when it arrives in clumps and wet tangles.
What you get in practice is a visible mat of hair sitting on the disc after a shower. That is not a flaw, it is the product doing its job. The hair that is on top of the strainer is hair that is not in your pipe.
Why flat beats tall
Drain strainers come in two broad shapes. There is the basket or dome style, which sits up out of the drain and collects hair in a little cage. Then there is the flat disc, like this one.
The tall ones hold more before they need emptying, which sounds like an advantage until you use one. They catch your toes. They get knocked loose when you shift your feet. They are awkward if anyone in the house uses a shower chair or a bath mat. And they put a visible clump of hair at an unpleasant height.
A flat silicone drain strainer at 0.5 cm high is barely there. You can stand on it without noticing much, because the silicone gives slightly under your weight. It does not interfere with a bath mat. It looks like part of the tub rather than something stuck on. The trade off is that you clean it more often, but cleaning takes about ten seconds so that is not much of a trade.
Who this suits
Households with long hair get the most out of it. If one or two people in the house have hair past the shoulders, you are already losing a surprising amount down the drain every week, and a strainer changes that overnight.
It is also a sensible pick for renters. Nothing is cut, drilled or glued. You set it down, you use it, and when you move out you lift it up and take it with you. Landlords and property managers like it for the same reason, since there is no fixture change involved.
People who wash pets in the tub will see the benefit immediately. Dog and cat hair comes off in volume, and without a screen most of it heads straight down. With one in place you peel off the mat and bin it.
Three come in the pack, which covers a main bathtub and a second shower with one left over. Some people keep the spare so they can swap a clean one in while the other dries, which is a tidy habit if you like everything looking neat.
Checking the fit before you order
This is the part worth five minutes of your time. A strainer that does not match the drain opening is a strainer that slides around or leaves gaps.
Take a tape measure and check the diameter of the drain opening in your tub, measured across the widest part of the circular recess. The disc here is 11.4 cm across with a compatible groove diameter of 1.47 inches, so you want an opening that sits comfortably under that disc without the edges hanging over a slope or a curve. Remember that one inch is 25.4 mm if you are converting.
Also look at what is already in your drain. Some tubs have a lift and turn stopper that rises above the drain level, others have a flat screen held in by a screw, and others have an open grate. A flat disc needs a reasonably level surface to lie on. If your stopper mechanism protrudes, there may not be room.
Do not plan on trimming the disc to size. Cutting into the perforated pattern opens up the edge and gives hair a path around the screen, which defeats the point.
Keeping it clean
The whole routine is lift, wipe, rinse, replace.
Lift the disc out while the tub is still wet. Hair peels off easily when damp and becomes stubborn once it has dried on, so sooner is better. A square of tissue or paper towel works well for grabbing the mat. Then rinse the disc under the faucet and set it back down.
Every week or two, give it a proper wash. Warm water and a little dish soap, a rub with your fingers or a soft cloth, then a rinse. That removes the slick film of soap and conditioner residue that builds up on silicone and makes the disc more likely to slide. Let it dry before putting it back if you have time.
What to avoid is simple enough. Skip scouring pads, which scuff the matte finish. Skip bleach and strong solvents. And please do not pour chemical drain cleaner down a tub as a maintenance habit, since it is hard on pipes and it is not solving the problem that caused the slowdown.
One more thing. A strainer stops hair, but it cannot stop dissolved soap and conditioner from coating the inside of the pipe. Running the hot faucet into the drain for a minute every so often helps flush that residue along before it starts grabbing at things.
Common mistakes
The most frequent one is putting the strainer on a tub floor that has not been cleaned. Soap scum under a silicone disc acts like a lubricant, and then people assume the product is faulty when really it is sitting on a greasy surface. Wipe the area first.
The second is emptying it too rarely. A strainer with a thick mat of wet hair on it will drain slowly, because the hair itself is now the blockage. That is not a design failure, it is a signal to clear it.
The third is expecting a strainer to fix a clog that already exists. If your drain is slow today, the hair is already down the pipe. Clear that first, then fit the strainer so the problem does not come back. For anything involving pipes themselves, bring in a licensed plumber.
The short version
Hair causes most bathtub clogs, and the cheapest fix is to never let it into the pipe. This is a three pack of flat silicone discs, 11.4 cm across and about 0.5 cm high, with a perforated pattern that holds hair on the surface while water drains through. Matte finish, soft underfoot, nothing to install.
Measure your drain opening before you order and compare it with the dimensions listed. Keep the tub floor clean so the disc sits well. Clear the hair every few showers, give it a soapy wash now and then, and the drain below stays as open as the day you moved in.