Jack Straw
I look nothing like him!
Before starting full destruction mode It would be good to do some sort of wild life assessment - depending where you are you might find slow worms, newts , frogs or toads or some small mammals. The weird weather has meant that most of these are active at the moment when most should be hibernating. Depending on how long the garden has been left you also might find hedgehogs or foxes have dug dens under the chalet (depending on the base).
That is a very good point.