Fleas live for about 10 days after emerging, but can hibernate for several months in the absence of a food source. Once a suitable food source appears they can rapidly emerge and the cycle restarts.
Scratching pets and bites, mainly from your knees downwards are indicative of flea activity.
We often have a busy flea season on the Island. We carry out a spray treatment to the floors of the property and in conjunction with the owner using a veterinary product on their pet, there is a very high success rate.