I have always used the valbazen (500cc) and mix 10-15cc of ivomec into it. Shake it up before you use it and so far my dogs have also been free and clear. I use this on my puppies starting out around 3-4 wks old also. I do not rotate wormers either. Been using this for 5 yrs. I have asked 3 of our local vets and all have said that is a good worming recipe...Others on here also have good worming recipes but this is what has been working for me.
Randy
What dosage do you use?
Like to know that as well