Don't worry, since doing this video I've cleaned my bathroom and it sparkles. Re-caulked, everything.

This video shows you how to use a drum auger/snake to clean the pipes in your house. The basic technique applies to all the pipes in your house.

I don't recommend using Drano or liquid cleaner, because it doesn't work well and just goes into the water supply.

Using a snake doesn't use any chemicals, and you get to pull out whatever hair was blocking your drain instead of forcing it down farther. In my old place, the drains would plug up every two years, and that's with hardly anything going down. Just be careful to not force the snake down, as you don't want to break any pipes.

Thanks. I hope this helps so you never have to use liquid drain cleaner again.