So my two cats have caught fleas from my roommates dogs. Yesterday I treated them both with Sentry Fipro for cats in hopes that it will kill the remaining fleas and eggs I didn't get with the flea comb. Should I automatically assume that they will get worms as a result? I can take them to get dewormed if so, but I don't want to put them through that stress unless absolutely necessary. But I'm not home every time they use the litter box so I can't expect every poo for signs of worms. What should i do? Wait it out or treat them now?