Ivermectin is/was all the rage in the BOI, but the latest is that it no longer works. IDK?
I spoke to a paint tech a while ago and he said its application, location and season dependent, what organisms the marine environment is supportive of, temperature, end use and so on. That's why some people swear by Altex No5 and others have a very average experience. If someone uses it in a marina with low water movement and it works, that does not necessarily apply to a tidal location with lots of freshwater runoff. Too many variables to promote or condemn paints by what's written on the tin, th