How Long Does It Take For Nexgard To Work On Fleas. Nexgard stimulates the fleas' nervous system, causing them to rise to the top of your dog's haircoat as they die. How long does nexgard take to kill fleas?
The active ingredient, afoxolaner, has been proven to effectively treat and control ticks and fleas for one month when given regularly. Nexgard starts killing fleas in as little as four hours after administering and 48 hours for ticks. Why am i seeing more fleas on my pet after administering nexgard?
Because nexgard tastes good dogs easily chew and swallow it and it kills ticks too.
Nexgard and nexgard spectra are generally considered safe for. Can i give nexgard to my cat? They are killed before they can lay their eggs and it lasts for a full month (30 days). Then follow the directions above for keeping flea numbers down in your yard.