For years I have seen inspection reports come back with the complaint of “Slow Drains”. I assume this is a universal plague since I have the same trouble from time to time, If you have an extra 3 bucks lying around I have to encourage you to buy one of these:
It doesn’t look like much but this simple tool will save you a lot of headaches and a lot of money as well. Buy it once for less money than a bottle of Drano and you are set.
You insert the tool into the slow drain and the nasty looking hooks snag whatever is causing the clog, usually hair, and you gently pull it out. I have left out the photos of clogs because I do not want to gross you out, but with 4 daughters in my house one shower drain took 4 efforts and a total clog weight of about 2 pounds! Not pretty but the drain flows nicely once again!
The funny thing is that the package says to discard the tool after use. I assume this is for liability reasons because cleaning off the hooks is a risky proposition. Be careful and you can reuse yours for many years. I just saved the packaging and use it as a sheath to avoid snagging things.