Kitchen Sink

I’m replacing my old vanity and toilet in my bathroom with a Kohler Pedestal Sink. The Kohler toilets seem to be overpriced….at least the one is that is the direct match to my sink. I was just wondering if it’s really necessary to match the brands. I can find a cheaper toilet that goes well, but it’s not Kohler. Thoughts please?

I also checked the pipes underneath, and they were okay. Any problems?

The pipes under my sink lead to a small round canister where the draining water comes in at the bottom and goes out at the top. I am wounder what this canister may be and what influence it may have on my sink draining properly (or not so properly). Also nothing under my sink looks like a j, p, or s really. the closest maybe s. there is after the canister there is also a t in the pipe where it goes up about 1 ft and is capped and the other end goes into the floor.

I have an old house and since I moved in the bathroom sink has always drained slow, or sometimes not at all. I have used everything under the sun to try to unclog it and even took apart the goose neck of it. I’ve even plunged it several times. Sometimes I put a little bleach in the drain and a bunch of black gook comes up. I don’t understand what is wrong with the stupid thing. At times water will just sit in the sink but then after it rains it seems like it drains. I’m wondering if my sink drain is hooked up somehow to outside and not to the proper system in my house. Let me know what you think!! Thanks!!

There are like these really small insects which are maybe 4mm in diameter, they have grey wings… they can barely fly (looks more like they hop from one place to another).. The only place in my house that they exist is in the sink of one of the washrooms. I kill them every day by just simply throwing water at them.. have tried spilling stuff down the sink to kill them.. it just seems like there’s an endless supply of them.

What are they?
thanks Elyn! that’s exactly what they are