Yes, any detergent will kill fleas. They lower the surface tension by acting as a surfactant and thus damage the flea’s exoskeleton. A foul-proof method to drown the bugs in the water! However, allow roughly 5-10 minutes after applying the dish soap and then rinse the pet.

Does Laundry Detergent kill fleas?

Hot, soapy water in a washing machine: As previously explained, washing flea-infested items in a clothes washing machine is an effective way to kill fleas, thanks to the laundry detergent, along with the heat of the water and the turbulence of the wash cycle.

What kills fleas on instantly?

Commercial Products from Your Veterinarian The most common product used to kill fleas on dogs instantly is Nitenpyram, more commonly known as Capstar. This single-use tablet is administered orally and kills fleas within 30 minutes. It is recommended that you contain your pet in a small area when using Capstar.