Prepare pudding mix and chill until ready to assemble. When cakes are cooled to room temperature, crumble into a large bowl. Toss with half the remaining cookie crumbs and the chilled pudding. Line a new, clean kittly litter box with a litter box liner. Put three un-wrapped Toostie rolls in a microwave safe dish and heat until soft and pliable.
Shape ends so they are no longer blunt, curving slightly.
Repeat with 3 more Tootsie Rolls and bury in mixture. Sprinkle the other half of the cookie crumbs over the top. Scatter the green cookie crumbs lightly over the top, this is supposed to look like the chlorophyll in kittie litter. Scrape them on top of the cake and sprinkle with cookie crumbs. Serve with a new pooper scooper.