When given as directed, Flea Treats cause your pet’s skin to emit a powerful odor that fleas don’t like. The odor is emitted by the skin cells themselves. The skin cells manufactured by your pet, once you’ve started feeding the Flea Treats, must work their way to the surface of your pet’s skin. That’s why it takes a little time for them to start working. Flea Treats contain water soluble vitamins that are not stored in your pet’s system. No matter what kind of pet you have, please remember that Flea Treats must be given daily as directed for maximum effectiveness. Maintaining the vitamin level in your pet is the key to success! Recommended Daily Intake: 0-29 lb., 2 tablets daily (1 AM, 1 PM) 30-69 lb., 3 tablets daily (2 AM, 1 PM) 70+ lb., 4+ tablets daily (2+ AM, 2+ PM) Ingredients: Brewer’s Yeast, Liver, Cellulose, Stearic Acid, Silica, Thiamine HCl (Vitamin B-1), D-Calcium Pantothenate (Vitamin B-5), Pyridoxine HCl (Vitamin B-6), Folic Acid, Cyanocobalamin (Vitamin B-12).