Bears have a strong sense of smell and can detect potential snacks from a considerable distance. An adult black bear is also physically strong, and can move a considerable weight attempting to get at a potential snack:
Even when that weight is securely bolted to patio stones:
The other boxes in this row were untouched. They were empty. Please don't leave garbage in your box all week! Garbage day is Thursday.
-put garbage out only on the morning of collection
-clean bins with bleach, white vinegar, or ammonia (bears can smell food for 3 miles and smell over 100x stronger than humans. these strong smells deter it)
-leave ammonia soaked rags in bin.
-do not leave out any food sources/garbage around home.
-bear bells attached to bins
-solar motion lights that use light pattern. A single light beam will not bother them after it first goes on.
-women menstruating should avoid going on walks, hikes or camping.