Start with 3 tons of gravel left over from the new driveway.
Put no more than 10 shovel-scoops in a wheelbarrow and set off down the driveway.
Give a really good shove to get up on the deck.
Steer carefully along the edge of the sandbox.
Don’t crash coming down the final ramp, and dump the gravel into the dog run.
I did the shoveling and Mr. Plain did the barrow-ing. All this for a dog toilet. We must be insane!