Defend your home and your pet with the Vet's Best Dog Flea + Tick Home Spray & Onguard Flea & Tick Spot Treatment for Dogs, 6 Doses (6-mos. supply) bundle. Make sure your home stays pest-free with this safe, effective spray proven to kill fleas, flea larvae, flea eggs, ticks and mosquitos on contact, without harsh chemicals. It’s designed to be safe for use around your family and directly on dogs 12 weeks or older. Then, give Fido the attention he needs directly and break the flea life cycle with this spot treatment for dogs at least 8 weeks old and ranging from 23 to 44 pounds. And—bonus alert—this treatment helps control infestations of chewing lice and sarcoptic mange mites too.