Crossed last Sunday even the Canadian border agent wasn’t wearing a mask. No one in the camps either.

The only mask requirement in Canada right now is if you're flying in on a commercial jet, where you do have to wear one at all times. 

That's also supposed to apply to float planes, but there's zero enforcement and no one wears them.

No requirements whatsoever if driving.

We were there the first week of June. We did not wear masks at the border and only saw one older lady wearing a mask when we stopped at gas stations, restaurants and stores. I always had it in my pocket just in case but never used it.