I have been using this as a dip for a few years now. works very well and it is much cheaper than other dips, also seems to be less harsh on the acros. there has been a large amount of people that have used it with the same success. for nuisance algae hydrogen peroxide works very well.
unfortunately i dont think we can get pesticides that use the mechanism that bayer uses in canada. one would have to order it online. good reviews on that product though