Three days ago I mixed up 1 gal of water with 2 Tablespoons of Wazine (which should be 1 oz). They drank the water off and on all day. I didn't see any worms after dosing them but today I see a bunch of little half inch long worms in their poop again. Did it work? Is it supposed to take this long? Are the half inch little white worms tapeworms that Wazine won't kill? They don't really look like worm segments and I am not a worm expert.