Re: Square Trash cans. On a really windy day go stand outside with your back to the wind. Then turn sideways, wellllllll haha. Also checking the weather and wind forecast prior to putting cans to the curb is very helpful. That’s your trash till it gets picked up! Meaning if it blows over ITS STILL YOURS TO PICK UP!! Again, just check the weather before putting cans out that way the shape doesn’t even matter. FYI: Sometimes it just wiser to wait till the morning, just a thought..