Did you know that fleas don't like caffeine? It's a chemical that many plants produce as a natural insecticide, which means your leftover coffee is an excellent beverage to use to bathe your pet. Just give them a normal bath and add leftover coffee. It'll help de-flea your pet, and it will also deodorize them, since the nitrogen in coffee is effective at deodorizing their fur. When the bath is finished, just rinse as normal.
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