Possum destroying garden
I was hoping you all may be able to provide some advice for dealing with a possum friend. I live in an urban environment and have a garden which I put significant effort into. A possum or possums have made a habit of digging up the very loose soil of the garden and my flower pots in search of grubs on a near nightly basis. This activity is destroying my efforts multiple times a week and is incredibly frustrating. The flower pots are effectively 100%wrecked each time. While I prefer not to trap or kill the possum as a solution I also will not consider poisoning my yard to prevent grubs from growing. When I happen on the possum I do try and shoo it out of the garden as friendly as possible but it does not have much effect long-term.
Any suggestions before I move to trap and relocate which I know can have poor consequences for them?