Not sure if this counts as "Home Improvement", but it's worth a shot:
I'm currently in an apartment where I'm not supposed to use chemicals to clear drains, like in the sink/tub.
I've cleared out the tub drain before (obviously hair buildup) but for some reason it doesn't seem to take long before it's draining slower than the shower is spraying.
It seems that the funk in the drain in a contributing factor, helping the hair to cling/build up in the drain.
Is there a home made or DIY (or "apartment safe") solution that will help to really clean the drains?