I am running into our local store today to get wormer for our chickens as I have seen a couple round worms on the poop board. I was debating between Ivermectin and Valbazen but our local store only has Ivermectin. I am not sure if they have the pour on though so I'm looking for more info on the paste just in case. Does anyone have any recommendations? I think I found a pea size amount per bird on a slice of bread but wanted to double check. Thank you!