There are two comments I would have on that.
First of all, this is why we believe that moving to closed containment is a real solution, because it eliminates the problem of disease and sea lice.
Second, as far as open-net pens are concerned, when they're using various pesticides in British Columbia, it's a product called Slice. Pesticides are known throughout the agricultural community to eventually become ineffective through resistance from the disease or pests and, in all cases, with New Brunswick being the prime example at the moment, other chemicals have to be used: more toxic chemicals have to be used and unproven chemicals have to used.
Again, we say that the best thing possible is to get these out of the ocean, to not have fish in concentrated circumstances in the ocean, but to instead keep them on land where these are not problems.