Burrowing critters

Sounds like a mole!

I personally have never found those scarers to work. We had moles in the garden and tried to get rid of them that way, but they seemed to like it and we ended up with more of a problem!

If you must use it make sure the earth is firm and well watered to allow the sonic wave to travel through the soil. It will really struggle on dry loose soil.

I had a pretty bad invasion from moles in my veggie plot a couple of weeks back. I bought a couple of solar powered mole scarers (used them before but the old one died when the lawn mower crashed into it) and stuck them in the bed. It took exactly two days before the moles were driven out of the veggie plot, i've left them in there ever since and the only time I saw a sign of moles was when one of the scarers ran out of power overnight. The only problem I have with them is that they don't always seem to charge up as well as they should unless you disconnect them so there's no discharge and stick them in a sunny spot for a few hrs to recharge. But when they're running, they do get rid of the moles.