How long do you quarantine?

With our pet snakes....we're not nearly as hardcore as with our breeding stock. Pet snakes usually 2 months - We keep them in our heated garage far from the rest of or snakes(pets or breeders). Anything thats getting introduced into our breeding stock will not be introduced for at least 6 months. We never quarantine multiple new snakes in the same areas either.
But thats just our procedure.

I keep my boa in a seperate room from my BPs. It just makes me feel more peace of mind, knowing that they are not really near each other, just in case my boa is a carrier. I believe in being more safe than sorry, since I have read of whole collections lost because one boa had IBD and spread it to other boas and pythons in the same room.
If I get new BPs, I keep them in another room for about 90 days. It's just safer to quarantine.

Yes.. I'm a firm believer in quarantine. I get paranoid though. If I touch a boa that carries IBD.. how do I be safe for my python when I handle her? Is just washing hands good enough? Should you change your clothes? It's always making me nervous since at work I handle snakes every day.. boas.. pythons.. etc etc.