I have a neighbour in Canada who thinks dandelions, crabgrass and other weeds are to be admired not controlled. The neighbours solution then is to start spraying early in the year, literally when the snow has melted, to prevent the migration of his lawn on to ours. One item that I have found effective is Weed B Gone. A spray concentrate that you attach to your hose and spray away.
Here is the quiz, which picture is from Walmart Canada and which is from Walmart U.S.?
Congratulations! Weed B Gone is $39.83 in Canada compared to $2.50 in the U.S. The $20.00 I spent to keep a nice lawn would have cost me $360.06 including HST. In FACT just the HST would cost me $16.00 MORE than the product in the U.S.
Love that FREE HEALTHCARE!