How do I clean closed head plastic barrels (polyethylene drums)?

Question

I bought some used plastic 35 & 55gallon barrels at the local feed store. They are a closed head configuration and I am trying to figure out a good way to clean them. I am able to use a broom handle with a washcloth to get around the bottom, but this doesn't get the walls very effectively. I am also using a dishsoap solution. Is there a better way? I would like to use a couple of these as rainbarrels, and the 35gallon ones for storing biodiesel.

Answer 1

make a stand turn them upside down, remove the bungs

hose the insides out,