Natural flea killer.

Dish Soap breaks down the flea’s exoskeleton and kills them within minutes, even after it’s been diluted in water. Simply wet your cat’s coat—a spray bottle will do the trick— and gently lather the dish soap into his or her fur (focusing on areas that fleas tend to hide) before rinsing.

To use dish soap to trap and kill fleas that have made your home their permanent residence, you can try filling a shallow dish with warm, soapy water and placing it close to a source of light. They’ll be drawn towards the light and drown in the liquid.