I was trying to figure out how to clean the top side of my barrel, around the bung, plus doing a good job on the ends. I had an "oh, duh!" moment and realized I already owned the necessary tools.
Recently I purchased an 10' extension wand for my powerwasher, to reach higher without using a ladder. It came with 2 new pieces (see picture) for cleaning siding and blowing out gutters, respectively. These should work great for reaching all interior points in the barrel.
Note: When using the 90 degree angle piece, be prepared for a LOT of torque. When used on the end of the 10' extension, it's a lot to hang onto, and even when added to the basic wand, it can be a surprise.
Recently I purchased an 10' extension wand for my powerwasher, to reach higher without using a ladder. It came with 2 new pieces (see picture) for cleaning siding and blowing out gutters, respectively. These should work great for reaching all interior points in the barrel.
Note: When using the 90 degree angle piece, be prepared for a LOT of torque. When used on the end of the 10' extension, it's a lot to hang onto, and even when added to the basic wand, it can be a surprise.