I know this is gross but I had a big roach problem recently. Apparently lots of apts. here were having this also and my neighbors did too. Well it went from seeing a few to them multiplying over night..there were a bunch. I was sooo grossed out! Usually they hung out in the kitchen cause I read they go where ever water is(they cant survive w/o water). Anyway I was disgusted so I looked online to find a solution. I found that Boric acid does the trick..mixed with sugar. I tried that and also baking soda with sugar, while it killed some there were still some lingering. Then someone told me she got rid of roaches by mixing boiled egg yolk with boric acid and water. She would make little balls and put them in corners, cabinets. So I did this and omg did it work! I have no roaches whatsoever anymore and they wiped out all in like 2 weeks. So if you have roaches..don't use those sprays, whatever..do this. I promise it works. They eat the balls because of the boiled egg yolk and the boric acid is poison for them. I heard they get constipated or something and that causes them to die. Anyway thought I'd share.