I acquired some levimisole some time ago but was reluctant to attempt trying it until recently. I finally got a milligram scale and have tried a few 50-70mg doses, once per day but can't really tell much about it yet. I also have a lot of piperazine citrate liquid but h side effects I've read about kinda frighten be from trying it.
If my intestinal "dragons" indeed are some mystery collembola species like I'm now suspecting, I wonder how maybe trying some lufenuron might work on them. The most complete sections of them that I've passed, consist of large, rounded, oval shaped segments covered with thick overlapping scale-like shells, almost like centipedes or lobster tails, obviously made of chitin, and the front portions of their bodies and heads are covered with overlapping scales. They fall apart into mush too easily when I try to Wash them off to clean and preserve them obviously they don't survive what little digestive process hits them very well... it turns them into mush quickly and they smell badly. But you can kinda see what they originally looked like.