For years I have put my trash cans out the night before they were to be picked up by sanitation only to find that animals have knocked them over and torn apart the garbage inside creatind a big mess for me to clean up.
I have tried in the past putting bricks on top of the cans and also tried using bungee cords to keep the lid on. Neither method worked and in fact the bungee cord ended up hitting the trash collector once and he made me remove them.
Finally there is a product that actually works that is easy to install and tough enough to keep animals especially Raccoons, out. Even the sanitation workers love it because it is so easy to undo and doesn't create a safety issue for them
The Trashgardstraps attaches to the trash can in seconds and allows me to leave the trash cans out overnight without worrying about what I will find in the morning.