Hartz UltraGuard Rid Flea & Tick Dog Shampoo provides your pup with relief from pesky fleas and ticks. The citrus-scented cleansing formula kills fleas and ticks through contact. Made for dogs and puppies 6 months of age and older. To use, wet pets coat thoroughly with water and rub shampoo into coat, ensuring not to get suds into the eyes. Massage from head to tail until coat is completely covered with a foamy lather. Let stand or continue to massage for 5 minutes. Rinse and towel dry. Repeat weekly if necessary.