Yeah, all of my bear canister experience is from other camping, not bike related. The majority of the time while bike touring in places where bears are the biggest problem there have been bear lockers. Other places in bear country the bears are a little less habituated to stealing food from humans and have never defeated whatever methods I have used to keep them out of my food. I have learned various hanging techniques over the years and have been successful. I have used other options at times like in a park where the state forest rangers said "store food in your car trunk", I asked someone to put it in their car. I have stored it in the rest room a couple times. A once I just left it on the ground well away from camp and took my chances when there were no trees and nowhere else to put the food bag. I was wishing I had an Ursack that day, but I got lucky there in that I had no thieving visitors that night. I fully expected to be buying new food the next morning, but it was untouched.

I have often considered an Ursack, but never pulled the trigger on the purchase. I always hoped they would be approved for use in all of the National Parks and Forests. If they were I'd buy one in a heartbeat. As it is I use a canister for backpacking where required and hang food where one isn't if bear lockers are not present. Bike touring I have not run into any situation where canisters were required and there wasn't a locker or some other option.

I have forgotten a small food item in a pannier pocket once or twice and had raccoons get into it. The little bastards slobbered up a powerbar, put it back and rezipped a pannier pocket. I didn't find it for days. The scent lingered for years and that pocket frequently got opened by raccoons. Most often they pulled everything out of the pocket and threw it on the ground. Then inexplicably most of the time they would zip the pocket back up.