It is almost time to bring the rain barrel out of the garage and start catching water again for the garden! Before you hook it up to the gutter it is a good idea to give the inside a good wash. This removes sediment and bacteria that may be dormant from last season.
The cheapest and greenest way to clean the barrel is a mixture of vinegar and hot water:
Mix 1 cup of vinegar with 1 gallon of hot water. Then with a sponge wipe down the inside of the barrel and allow the mixture to drain through the hose.