Here's a quick flea quiz: In which of these months do we see the highest numbers of animals coming into the clinic with fleas? February, May, August, or November? In ideal weather conditions fleas can double their numbers every 2 weeks. This doubling causes a geometric progression in flea numbers (like 2x2=4, 2x4=8, 2x8=16 and so on) so in just 8 weeks a single male and female flea hiding under your sofa can produce 1024 offspring! It doesn't take too many more doublings until the numbers are off the chart. Flea numbers don't begin to slack off until we get several killing frosts. Also, when it cools down in the fall fleas will stay on the animal to keep warm and jump off to lay their eggs in a warm environment like your living room where they will continue to reproduce (although at a lower rate) indefinately. So, when would you expect to see the highest numbers of fleas? Just before a killing frost in the fall like early November. The point of all this: don't slack off flea control in the late fall. Continue with monthly control at least through December. So far this year we're seeing excellent control with Vectra (monthly spot-on), Comfortis (monthly oral tablet), Sentinel (oral tablet that prevents eggs from hatching into larva), Revolution (monthly spot-onthat also prevents heartworm) , and good to very good control with Frontline. Remember that Sentinel and Comfortis do not kill ticks.
