I’ve tried the dryer sheet method with less than the good results you got, Bob. But perhaps I wasn’t patient enough to allow the softener to soak into the bugs. If memory serves, which it too often these days doesn’t, it left a difficult to remove film on the glass.
You’re certainly correct about the Saskatchewan critters, and a few on the Alberta prairies too, where Mom was born. Canadians must be expert at dealing with them... the Bug-Off windshield treatment was from there, and I got mine in Cranbrook while visiting Ft. Steele. Outside of Canada it proved hard to find, though.
Joel