We have about 8 of them. Got ours after they had been used for Coke or Pepsi syrup. We washed them really well and left them sit with fans blowing fresh air into them for 2 weeks and they still smelled of vanilla, the main flavor in Coke. Fortunately vanillin is one of the common bacteria that make up the flavor of maple syrup. Never noticed it in the sap or syrup. It was undetectable after the first season.

We cut holes in the tops after the first season, about 2' x 2' feet and got a gutter cleaning wand for the pressure washer. Without something like this it is virtually impossible to clean the inside tops. Works great.

We have 3 in the bush with releasers on top, one for concentrate, 2 for permeate and a couple uphill for raw sap coming in.

Love them. Cheap, Lightweight.