Have you ever wondered what causes the wheels on shopping carts to go bad?
Broken shopping cart wheels are a real pain in the neck. It seems to me that 9 times out of 10, whenever I get a shopping cart, the darn wheels don't work right. You walk down the isles and all you hear is THUNK, THUNK, THUNK, THUNK... Not only is the noise annoying, I hate the way it shakes the whole cart.
The crazy thing is this problem is so avoidable.