Oatey Oatey-43745, No Size, Black

I have been putting up with a smelly shower drain for more than a year. I got to the point where I thought I was going to have to cut the floor open to install a larger trap, but then something made me think to look for a check valve. This insert isn't specifically called a check valve, but in essence that's what it is. Water can flow in one direction - down the drain. Neither water nor odor can flow in the opposite direction - into the shower. It was extremely easy to install. I removed the drain grate from the shower floor, wiped out the inside of the drain pipe, and then pushed this little device into place. After that, I put the grate back in place. The insert didn't get in the way of the grate at all. It's very effective, too. Shower water drains unimpeded, and there is no more odor coming from the drain. This was a whole lot less expensive than a major repair on the drain trap. I am beyond delighted that I found it, and Oatey is a reputable brand, so I trust them!

I have a upstairs shower that has a faulty P trap and often smells bad. I had to clean the drain every couple of weeks only for it smell bad again. This drain trap fits perfectly in the drain pipe and immediately blocked the smell. So far no issues with slow drainage during or after I take a shower. I would recommend however just manually inspecting it every now then to make sure no hair or gunk remains on the drap trap after a while. Its easy enough to remove and give it good clean and or rinse and then putting it back in place. I like that no tool are required for installation except for a screwdriver which you need to remove your existing shower drain cover. Definitely money well spent as my P trap is not accessible to replace or repair without a major remodel. So this is a cheap and easy fix.

I purchased this to help with my drain smell I was having in my shower. It was easy to use and works great. Haven’t had an issue and highly recommended.

I purchased to reduce noise from shower drain that's about a foot above the P-trap - does a good job. Easy to install. Hope it lasts. Seems expensive for what it is.

Love that this fit right into the 2" pvc drain in a shower stall in my beach house which had sewer smell which was horrible when we were not there. I used to use a plastic bucket over a piece of plastic to cover drain when we are gone. Water from shower goes right through. Very easy to install.

Doesn’t really Block any odors. Says I might get charged a restocking fee but how would I ever know if I don’t take it out of the packaging?The piece that is supposed to stay closed is open. Looks like the rubber doesn’t completely “close” and just seems to stay apart allowing odors to come through.

We live in a newly constructed home. After a year we noticed that the standing shower started to smell, and mold started growing under the silicone caulking. I stripped the moldy caulking, re-caulked the entire shower. After 2 weeks the mold was back. I was starting to guess that it might be the drain and p-trap. I purchased this Oatey seal to test my theory. Installation was a breeze, it just pops right in and fits snugly. It helps with aesthetics of not having to see a white pvc pipe in the shower. The water drains without any issues, I've never had any build up. Finally, it's been over 3 weeks and no mold in sight. Fingers crossed this continues to do the trick!

I bought this item in September 2022, but June 2023 the flap at the bottom end became more loose, the rigidness dropped and a gap appeared. It is not a large gap, but enough for the mildew smell to slowly get in. I think for the price paid (about $37) it could have served longer, but during the period it worked, it worked well enough so perhaps it is not so bad. I will try other brands in the meantime and not re-buy this model