Program has no effect on adult fleas, so you must treat the house or wait until all the fleas in the house have died before your cat to be without fleas. Program comes in liquid form which you mix into your cat's food. It is also available in tablet form. Whichever form you choose, you must administer Program to your cat once each month. It must be given with a full meal.
Program has no effect on ticks.
Vetkem produces a collar, Ovitrol-Plus, which contains a new safe insecticide to kill adult fleas. It also kills ticks. These handy wipes are loaded with a safe insecticide that rapidly kills adult fleas. They are inexpensive and easy to use. However, they do not prevent egg development.