Should I keep my dog/cat on flea/tick preventative year round?

In Oklahoma/Texas and a few of the surrounding states, I recommend that you should keep them on a preventative year round. We just do not get cold enough winters to kill fleas/ticks.  Remember, fleas can live inside your house! So, you could have fleas year round.  We want to “prevent” ever seeing any fleas/ticks! If you don’t see any on your pet it means that the product is working.