Thank you for the question.
I actually recently supervised a Ph.D. student who looked at the very issue of bait and the extent to which it is a problem in contributing to the AIS problem. The problem is not the import, because the import of bait into Canada is banned, and it seems that's generally upheld. There are probably some minor exceptions regionally, where there are recreational fisheries near large populations of American fishermen.
We found that in Ontario, where we did our primary study, there is an occurrence of AIS in the bait trade. We found them in very low numbers. For example, we did a study where we looked at 17,000 fishes bought from 50 different bait shops in southern Ontario. We found only a handful of aquatic invasive species that are illegal in the trade.
So if you go and you buy your bait, getting an invasive species in that bait is a rare event. However, that event, the buying of bait, occurs over four million times a year. This is a low-probability event that has a high probability of actually happening.
But that's not the end of it. That's sort of the—