What can I do with dog poo?

It might seem like a stupid question, but my Staffy goes several times a day, and I'm forever picking up after him!
Apart from putting it in a poop scoop bin, is there anything that it is actually useful for?
And how can we get rid of after smells?
We have a pebbled garden, so scrubbing is out of the question, but there's only him, no children that use the garden!
Thanks in advance.
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