Roundup and Killex are only banned in some Provinces, and as far as Manitoba goes, are banned for cosmetic use on home lawns, parks and school grounds. It is still legal for use on noxious weeds such as poison Ivy and of course farmers and golf courses may use it at will (if THEY go broke, who's going to pay taxes?). So, the local Canadian Tire still has Killex and Roundup, but they are in a locked cabinet and you have to *ask* to purchase them.
The "claim" is that they are trying to protect the children and prevent runoff into lakes and streams. The only properties near lakes and streams that I know of, are farms and golf courses. Naturally, roundup can be sprayed on food crops such as wheat to insure it can be harvested in time.... if the kids eat bread made from that wheat... meh, who cares as long as the tax dollars have been collected.
I do have a bee in my bonnet about all this.... the 3 way herbicide (Killex) is approved for use by the Federal Government and likely safer than the chelated iron products we're supposed to use, but Provincial Governments may ban such products at will, even with no evidence to support their stand. <groan>
On the street where I live, many have given up and don't even bother mowing until the dandylion field they call their front lawn has gone to seed.