As Bryant said, you still have a happy healthy tape worm.
Go to your feed store and get you a tube of Zimectrin Gold. Give them a clot about as big as a M&M and your problems will be solved. There was a thread not long ago in the dog doctor section about this.
It runs about $16 to $18 bucks for a tube around here and it will do several dogs. You will end up spending more than that messing with cheap wormers, expellers and home remidies and still will likely have worms and end up having to buy it anyways.
Zimectrin Gold works well for us...2 notches on the syringe is about the size of a M&M, small dogs and pups we only give them 1 notch on the syringe.
Will Ivomec do the same as zemetrin gold?
No! Ivomectin will NOT clear tapeworm of any strains............
I think Zimectrin Gold has a hint of Ivomec in it, it'll pretty much take care of everything...