http://www.irishhealth.com/article.html?id=1946

http://www.comeunity.com/adoption/he...sites-NIH.html

I am not an expert on parasites. I have read conflicting data on how long but the longest I have seen is 7 days and that is to kill flukes. So perhaps 7 days is better. After my little experience I sent a selection of rats to a bio lab where a good friend works (masters students sometimes need non critical tasks to do, apparently). They ran a quick screen and out of 20 rats from 4 suppliers found 10% carried either hook, pin, or tape worms. We didn't look for anything else as they required more careful testing 2 or 4 suppliers had at one rat that carried something. The best reptile vet I have ever spoken to believes 5% of all pet snakes have worms.