We’re in a battle. It's me against the fleas. In South Carolina, the weather is mild much of the year, which is perfect for fleas. We never get a hard enough freeze to kill the fleas. As a result, we're constantly battling itching pets, home infestations, and the tape worms associated with fleas. Among the worst states in the nation in terms of flea and tick issues are South Carolina, Georgia, Florida, Mississippi, Alabama, and Louisiana. The little critters thrive in the humid, moist climates of these Deep South states.