Penguins are Getting Into the Act

The rabbits have recruited the penguins to assist them in convincing the human that hoop house construction plans should be started. They mentioned the idea of a hoop house over the pool, and of course those penguins were sold on the idea right away. Does anyone know how in the world to stop this? I shudder to imagine how many plants might result from year round gardening access and I shudder at the penguin pool parties that might result!