Last year was our first year on 3/16 line and drops. We have two different woods that we tap so at the end of the year we tried two different cleaning methods to see which would be the most effective moving forward.

In our first woods, and much larger, at the end of the season while the sap was still running we went through with jugs and a solution of peroxide and water and dipped each tap and then let them hang. We let them hang throughout the summer and noticed two things.
1. Our taps were severely damaged by animals, both deer and squirrel.
2. Although the our lines were quite dry, we did occasionally see spots of mold, or bacteria build on the sidewalls of the tubing.

In our second woods we again pulled the spouts while running dipped them in the same solution and let them hang but for only about 5 warm, dry days, and them went back through and capped them all. In this woods we also noticed a few things.
1. While capping the lines there was some residual liquid in the laterals but it has stayed clear, no build up of mold or other signs of bacteria (although I know there is of course some)
2. With the spouts being capped of course there is far less damage by squirrels and deer

Given our results we are cutting and sanitizing the spouts from the first woods and then re attaching them to the drops. Before we tap will dip them in our solution of peroxide and water again to re sanitize the exterior walls of the spout. Given the principles of the 3/16 line if the trees are running when we tap there should be no new introduction of bacteria into the tap hole.

My only question is when sanitizing spouts at home what solution do you guys find best?