We also had rngworm. Even though we got the medication from the doctor I was also worried about the liver so we stopped using it and it went away but I was vigilant. If I were you I would rinse the kittens with an apple cider rinse (dilute it to 1/4 vinear to a cup of water every day and wash them in Nizoral 2x a week (if you are not using a collar I would skip the Nizoral). If you see any ringworm popping up on the kids or your hubby go straight to the Lamisil and if that doesn't work (it takes about 2 weeks) I would paint the lesion with clear nail polich (no oxygen, no fungus) butI find th Lamisil works best. My kitten had obvious lesions - I put him in a plastic collar -see Jasper space cat photos- and used Lamisil cream. He went from losing all the hair around his eyes, nose and tips of his ears to beautiful again in 4 weeks. The skin was slightly discolored at first but that is also going back to normal. No collar - no cream.
Ringworm spores can last up to 18 months. Unfortunately, the more cats you have the harder it is to get rid of it but most people and cats are immune to it. Cats can remain asymptomatic carriers for the rest of their lives - especially if the frequent cat shows or live in a cattery. But that is onlybecuae the spores are on the ir fur or they are in carpets, etc. Humans also develop a bit of an immunity to it. Wash all your bedding and clorax and vacuum everything. I misted the carpets in diluted vinegar. Luckily, we noticed the second day he was here. We confined the kittens to one room - I know it is hard to do but Jasper was confined for 4 weeks straight. Think of it as if your whole family came down with pinworms - nothing deadly - just annoying.
And most important, wash carefully every time you touch the kittens. My children were not even allowed to touch hime (try keeping a 8, 7 and 6 year old away from a kitten). We basically were running a quarintine ward down to the lateX gloves - but it was gone in 4 weeks. Luckily, Bengals are short haired cats - it usually will clear up within 8 weeks on its own.
GOOD LUCK! And cheer up - Jasper missed three cat shows because of this.
We also have had an intermittent problem with he runs. I am trying Hills' Science Diet I/D. I will tell you how it goes. If not, I am switching him back to raw - it worked before and I will not be so lazy this time. My vet says they have a shorter digestive tract than most cats. Some people swear by Royal Canin.