I have been battling this for a month now. I am treating appropriately but it’s like the worms stop feeding for the duration of treatment and then start reproducing again. I am doing fecals twice a day. I completed valbazen two days ago. I heard them sound gurgling again and performed several fecals and by this evening saw an egg as expected. I don’t think the wormers are killing them. I think they are just stunning them and some are waiting it out. Is there a wormer that will actually kill them? I have read Flubenvet is the only wormer to actually kill them but I understand it’s not available in the US. I have tried chemical and natural remedies as well but nothing has worked. I have moved their range as well today. I started them back on valbazen today but I feel if I keep them on it for even an extended amount of time like 5 days the worms will just hold on. They are completely resistant to fenbendazole. Please help. They are my pets and I am just desperate.