I have a 6 month old kitten with worms. I have had him for about 2 1/2 weeks now and tonight was the first sign of them. What kind of OTC(over the counter) Dewormer should I get?? I need to get this done asap because I have another cat in the house. I do not want him to get worms. Do I need to seperate them until it's all gone? Do I need to resanatize my house now?? Help not sure what to do. He has only been here in my house for about a week now.