You have to take control over your household. You’re not their friend, their buddy, you are their mother.

Where are the kids father? Get him involved, now. I don’t care if you don’t like each other, he’s in arrears in child support, or whatever else — he helped create these little monsters.

Something tells me this isn’t just a “they need testing for x, y, and z” it sounds to me that you’re in over your head.