Not at all! CATLINK doesn’t need special litter or proprietary consumables like several other self-cleaning litter boxes on the market. In fact, CATLINK works well with almost any clumping litter. Litter beads and crystals that are small enough to pass through the screen will also work in CATLINK. Litters that are strictly absorbent, non-clumping, loose-clumping, newspaper-based, or wood-based pellets won’t work with CATLINK, as they interfere with the sifting process.