Expert: Dr. Louis N. Gotthelf - 11/24/2009

Question
Hi
Are dog has fleas.
Do fleas lay eggs on the dog.
We fogged are apartment and put biospot on are dog right away.
We have been vacuuming the whole apartment everyday.  

Answer
Fleas do lay eggs on the dog and as the dog walks and runs all over the house, it is dropping flea eggs.  The normal cycle from egg to biting adult flea is 21 days.  That means that you need to spray every 2 weeks to break the cycle. Unfortunately, BioSpot only kills fleas for about a week and then it doesn't.