Flea-fighting products that contain a synthetic insecticide have come under fire recently . The Environmental Protection Agency has called for stronger warning labels . Hide Caption 1 of 7 Photos:Photos: Deadly pesticides in the U.S.
Flea-fighting products that contain a synthetic insecticide have come under fire recently . The Environmental Protection Agency has called for stronger warning labels . Consult your dog 's vet about the remedy that works best for your pet .