You can use a vaccuum thingy, just dont go into the sand hover over it and if need be use your hand to swerl the waste up and the suck it up like that.
I feel your pain man! I'm also 15 and no help from mom and dad. Kinda sucks but gives me more of a sense of accomplishment. BTW how big are your blood parrots and how long did it take to get that big. The sand looks really nice.