There are a few things you can do to clean out a gas can if it’s been sitting around for a while.

  1. Pour some water into the can and turn it on to medium heat. When the water starts to boil, add the cleaning agent of your choice and let it work its magic. Be sure to turn off the can when it’s done, or you’ll end up with a mess.
  2. Use a plunger to push all of the liquid out of the can and then place it in a bowl or sink. Pour some water into the bowl and use your plunger to suction onto any chunks of dirt or debris that have stuck to the top of the can. Gently pull them away from the can until everything is clean.
  3. Place everything back in its rightful place and let it dry out for a few hours (or overnight if you have time). Once everything is dry, put it back in its rightful place on your shelf!