Program works as a insect growth regulator and does not actually kill adult fleas at all. Instead the active ingredient benzol phenyl urea lufenuron acts as a chitin synthesis inhibitor, causing mortality in hatching eggs and molting larva. Hatching fleas are unable to get out of their eggs due to the egg tooth not being formed due to the Adult fleas ingesting the IGR and thus passing on a genetic defect. Frontline - Frontline is used for Flea and Tick control and is not water soluble. The active ingredient Fripronil is a nervous transmission interrupter, causing rapid death to fleas and ticks.
Ticks die before attachment and repels further for up to three months.
The good news on Fronline is that it is safe for dogs, cats, kittens and puppies as well. All rights reserved.