One of my hens has had watery droppings for a while and this morning I found that she had passed a large worm. I tried to identify it from online sources and I think it's a round worm (light pink, long and twisted, and about 1/16" thick.) I put DE in her food right away and added ACV to her water. The site says to give "Verm-X" but I can't find it on Amazon. What would you recommend?