Yolk, you've given me food for thought. I don't suffer any muskrat issues in the HBG pond, and have just realized that the likely reason is due to predation by the hybrids. Whenever a rat wanders in, it is immediately set upon and devoured by the fish. This might also account for their tremendous growth.
I'm thinking in addition to Optimal, I may begin adding small, fur- bearing animals to the hybs diet. What's the squirrel population like down your way?
