I just gotta get rid of all this crap. Any thoughts?

I've embarked on the task of cleaning up our back yard with 4 months worth of winter poop sitting in it. Lovely how she wants dogs yet does nothing to clean up after them. End rant.

Anyway, I shoveled for about 30 mins and was barely made a dent. The ground is soft and the crap is stuck to it mostly, so is there any magical dissolving potion one uses to decompose dog poop?