Dish soap (I use Dawn because it rocks!), vinegar and a mason jar. Fill the jar about 1/4 full with the vinegar and then add 2-3 drops of the dish soap. Leave this sitting on the kitchen counter overnight and when you wake up in the morning you will see it chock full of those pesky little buggers.
ONLY use this and it leaves floor spotless. (Heavy duty floor cleaner recipe: cup white vinegar 1 tablespoon liquid dish soap cup baking soda 2 gallons tap water, very warm.) It leaves everything smelling amazing.