I’m waking up each morning to dirt being thrown over my slabs, any information would be appreciated

Question

What is doing this each night to my garden?

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Answer 1

Without catching the animal in action, it can be very hard to know what it is, unless you see signs that are particular to certain animals. By this picture, I can see no good evidence pointing to anything in particular.

You may try putting out a catch and release cage to figure out what is causing this.