Incidentally, waiting to see worms in the droppings is kind of a lost cause. When you see worms in the droppings, it only means that one died or that there's a heavy infestation - which is bad. They don't normally pass them as dogs or cats do as their systems are different.
The only true way of knowing is by doing a fecal "egg count', not examining feces for worms.
Flubenvet is being marketed as requiring no egg withdrawal. Flubendazole. It's an actual wormer, not an herbal. Rooster Booster has a wormer called "triple action" that worms and is non-withdrawal and has probiotics, vitamins, and minerals. I'd probably go with that one.
VermX claims to worm with no withdrawal, but there are no studies yet at all to say that it can. (I asked.) So I'd still go with the triple-action (hydromycin) as it has been used for years with known results.
That being said, personally I'd want to use Wazine and follow up with ivermectin as to me it's more important to get the adults and larva and miss some eggs than leave larva in their systems which will just become infective. Worms can make their way into eggs.