Gelatinous Octahedrons in my garden

They are really more gelatinous blobs.
I've got slime mold. Last night I went out to collect snails (got a half a quart size ziplock, a few of them were very big) and found several colorless blobs. Yuck. I scooped them up and put them in the bag with the snails. Does anybody know how to prevent them from coming back?