Many pet owners find that a natural homemade recipe made of liquid dish soap, vinegar, and warm water is enough to kill fleas, but it isn't always effective enough. (wisebread.com)
Try combining 1 gallon of white vinegar, 1 cup of salt, and one tablespoon of liquid dish soap. (naturallysavvy.com)
If your cat has a mild flea infestation, a comb through with a stiff comb dipped in water and non-toxic liquid dish detergent could fix things. (felineliving.net)