Cats bring in numerous parasites and are riddled with loads. Read what Hulda Clark has to say about pets especially cats and dogs. If the cat goes outside your in trouble. The only thing you can do to be totally safe is sell or give away your pussy. Then you should team clean the entire floor space, curtains, couch & beds. Use some form of anti-bacterial over counter tops etc. You can get a Cat zapper from Bruce Stensulson's site but its all too much with pets.
If you wanna keep the cat then get it a zapper and make sure its on everyday as soon as the cat goes out, put it back on when it comes in or before. Get an ARANIZER machine this will kill alot of crap in your home too.