math ace. Fenbendazole (Safeguard) is a good wormer, but wont kill tapeworms. The Safeguard paste wont kill gapeworm, but the 10% suspension liquid will kill gapeworm. turbo13, since your chicks are only 6.5 weeks old, I doubt they need to be wormed. If your chicks are acting lethargic, slowed eating/drinking or not at all, then you might have a worm issue. HudsonValleyGirl, DE and a host of other natural products are good preventatives, but they wont kill worms. If I had a belly full of worms, I dont want the doctor giving me DE,cayenne pepper,pumpkin seeds, nor crushed garlic. I want the strongest chemical to get them out.....like yesterday!! Same with chickens. I like watching "monsters inside me" on animal planet. The doctors there dont give natural wormers to humans to get rid of worms....they give them fenbendazole, ivermectin and praziquatel pamoate. Sounds familiar? Yep, same wormers as I give my chickens to get rid of worms (different form of same wormers.) Hope this helps.