Create a digging pit for dogs created out of leftover decking lumber filled with a mix of sand and dirt, to keep it lose and well-drained.  To entice a dog to dig where you choose, bury some toys and treats. Go outside with your dog, run to the digging pit, dig up a treat yourself, and give it to the dog. Scratch in the dirt and encourage the dog to join in. Play with a toy after digging it up.
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