Simparica is a new oral flea and tick treatment for dogs. The flavoured chewables are safe and fast acting that remains effective for 35 days long. Simparica oral treatment starts killing fleas within 3 hours and ticks within 8 hours of administration. Without losing effectiveness till the end of the month, the flea and tick chewable prevents parasitic infestation. Shop best flea and tick control products online at DiscountPetCare with free shipping.