Pond Boss Forums AERATION Systems questions beavers chewing air hose

I have seen weighted and unweighted tubing perforated by muskrat, where the tubing was laid in heavy water lilies patches.
I assumed that they took the tubing for some root tuber and tried to take it out of the water. As soon as the air came out, they left it there, but the damage was done! I have samples of chewed tubing at the office.
On one particular site we could count dozen of muskrats feeding about, and after two repairs, they somehow learned to avoid the tubing because we never had to do more repairs.

In maple sugaring operation where the sap collecting tubings are chewed heavily by squirels, they have developed a tubing that is coated with tiny sand particles... It seems like not all squirels will chew tubing, but once they start, it takes a major deterent. They must be attracted by the sweet sap inside... sugar junkies!