Instead of using a ladder to climb inside a trash can (which I generally try to avoid if at all possible). I carry a 3-piece extendable 6-foot pole with a hook on the end to help poke around and grab items in the lower reaches of the trash bin.
By not getting into the bin I can make a quicker egress if necessary and appear a little less conspicuous.
Some people use those grabbers that they sell to the elderly for reaching high cabinets but I prefer my hook.
I suggest, if you use a hook, not to make it look like a dangerous weapon just incase the police do show up.
