I've noticed a huge decrease in the bug population in my house after adopting my cats. If they find a bug, one likes to play with it and another will sit there watching until the bug gets slapped too close, then out flashes the paw, beats the bug into paste and he licks it off his paw. Disgusting, but efficient I guess.

Word apparently spread about the dangers of my house and I haven't had a bug show up indoors (that I am aware of) for a few years now.