For heaven's sake, you-all! Gia, if you're not totally confused having read this far, here, Sweetie: I'm sure you know that animals leave droppings. Spoor and scat are words (not bad ones) for these droppings. The poet did two things in that sentence: he changed the word order, and left out the verbs. In prose, the sentence would read something like this: "the spoor is (or will be) gone; the scat is (or will be) gone". And I think, from the lines above that one, we might safely assume that he meant ALL of it is gone.