Sea lice are not my area. The SSHI didn't look at sea lice, so I can't respond from a place of being an expert in sea lice.
I can say that it does concern me with increasing resistance in the drug SLICE that impacts of treatments like the Hydrolicer, which employs a strong stream of water so that fish are dislodged of sea lice, create a lot of stress on fish. I do know something about stress, and I am concerned that if that kind of tactic to control sea lice were to take place that the stressed fish, the fish that would come out of those kinds of treatments, may be more vulnerable to infection and disease. It's plausible that treatment could actually elevate risk to wild salmon.