Numerous factors have contributed to the increased range of these parasites
A dog in Tampa, Fla., had a severe flea infestation. An area flea-counting system was used to evaluate pet flea counts.
Parasitologist Dr. Michael W. Dryden addresses the distinction between initial speed of kill and residual speed of kill of flea adulticides; he explains the latter's importance in successful flea control in the household.
Why do fleas sometimes persist in an environment even when you think you and your client are doing everything right?