Not so with fleas. Flea control, at best, is a difficult task. Heavy populations may take several applications of a pesticide and as long as 4 weeks to control. With fleas, patience is a virtue. Successful flea control must include a thorough treatment of the infested animal and the entire infested premises - indoors and outdoors.
Homeowners often wait until adult fleas are seen before treatment is begun.
Fleas have a complete life cycle. Now don't get carried away. This is important information, and the more you know about this pest the more this information will help you. This is important to know because there are products that will actually kill the egg before it falls from the animal. If eggs are killed, no adult fleas develop and there is no pest problem.