Squirrels must have a sweet tooth!
Check out this damage made from a squirrel chewing the valve! While we are collecting sap and making syrup, much of our time is also spent in the woods repairing damage like this! Squirrels will also chew holes in the tubing decreasing our vacuum levels, ultimately, losing out on sap! They must be able to smell the sweet sap running through! I guess we can't blame them