i started premixing this year had a hard time trying to look at the side of the jug to see how much i but in,and didn't feel like pouring into a measureing bucket then into the boat. i'm not sure what they call it but it looks like the body of a grease gun with T handle on the back and a clear plastic hose on the other end.stick in the jug pull the handle back 16oz on a full pull i etched the shaft of the handle in 4oz increments and checked it on each increment to make sure it was consistant works great. i store it upright in a coffecan with the hose up and covered no mess. i picked this up at our farm store.