2) Trap Bait
Raccoons and other omnivores love fishy smelling things, so use the sardine liquid or actual sardine pieces to bait your traps. That coon or bobcat will give you a beautiful pelt, and it could be a welcome change in menu if times are tough.
3) Shelter Smoker**
If you have a bug infested shack, shed or hut that you need to smoke out, place some red-hot coals in a large sardine can, crumble some dry rotten wood over the coals, and place the container in a fire-proof spot in the shelter. The can full of coals and punk wood will create tons of smoke, and should resolve your bug troubles, at least temporarily.