A. Frontline works best if it is given either three days before or three days after bathing your pet as it is absorbed through the skin. Frontline works on pets, but you will need to continually give treatment for up to three months before the environment and your pet are fully flea-free. Your pet can continue to get fleas from the environment as the eggs hatch and attempt to jump on your pet. Making sure to clean the area your pet is in, such as washing bedding and vacuuming carpeting (especially areas with cracks such as along the wall) can also accelerate flea removal. If your pet still has fleas and you want immediate relief, your vet can provide you with an oral medication such as capstar to kill fleas depending on when the last Frontline dose was given.
Pets can continue to itch for a while even after the fleas themselves are treated. Flea bites can cause an allergy, called flea allergy dermatitis, which can cause itching, scratching and redness on the skin. While many owners think this means fleas are still there, it could just be the skin healing from bites. An allergy medication and preventing your pet from scratching can provide relief during the healing process.
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