Hello - your husband is in the majority. Here are a couple of links that might help:
http://vm.cfsan.fda.gov/~mow/intro.html This one is from the FDA. This next one is from the CDC: http://www.cdc.gov/ncidod/dpd/parasites/listing.htm Sometimes people need a lot of proof and they need it from the "big guys" - not just from some old man in Mississippi. You can always let him read http://www.humaworm.com it explains a lot and has more helpful links. He can research the formula to see for himself that the herbs used really do remove parasites and toxins.

I firmly believe that everyone over the age of two should parasite cleanse twice per year. It might not cure your child, but it can't hurt. The herbs used in HUMAWORM kill a wide variety of parasites, bacteria and viruses. Let me know if I can be of further assistance.