If pests are a problem in your home, there are plenty of eco-solutions that don't require toxins or harsh chemicals. To some people's amazement, cockroaches can't stand catnip, so place it in areas you've spotted roaches. Spraying them with soapy water will also kill them on the spot. Use havahart traps for mice so you can relocate them later. Ants loathe spices, so sprinkle cinnamon or cayenne pepper in their path.