Any home remedies for slow drains? I have a slow drain problem within my bathroom that is...

I have a slow drain problem within my bathroom that is affecting the sink and tub. Its slow to drain and because the town utilizes ably water, it stinks too!! The dampen was tested and its potable. I be quoted $600 to get the work done... basically verbs the pipes. Is there anything I can do that may solve the problem? I've tried the soft stuff but only solves the problem temporarily. Someone said use to a showery vac to suck it all out and that may do the post.

Any ideas?
Answers:    600 sounds steep-sounds approaching drain lines have build up that's too unwieldy for commercial cleaners-shop around for another plumber-shouldn't be no more then max of 200.sink drain procession and main drain smudge should clear problem
Try putting 1/2 cup baking soda in the drain, followed by 2 cups of vinegar. Let it sit for 1/2 an hour or so, afterwards flush with lots of hot hose. Even if it doesn't help the clog, at lowest possible it will smell better. And you can do this as often as you obligation to. It won't hurt anything.