Getting Rid of Unwanted Knats

I think thats how you spell it. Anyway, you know how sometimes you get those pesty "fruit flies" in your house? Maybe from your fruit, or your garbage, or your inside plants? Well, here is a solution I heard today (haven't tried it yet):

Crush up a garlic clove or 2.
Place them in a cup of water.
Allow them to sit overnight.
In the morning, or the next time you water your indoor plants, water them with the garlic water.

My friend swears by this, so if you try it let me know how it works out :)