Natural Litter Attractant Probiotics Helps make toilet training easier by attracting your kitten to the tray combined with all natural probiotics that help eat bad odour. Breeders Choice Plus with natural litter attractant is made with an all-natural scent that helps safely attract your new kitten to the tray, making toilet training easier. The addition of naturally occurring probiotics, that feed on the bacteria in litter trays delivers brilliant odour control, keeping your home smelling clean and fresh. Breeders Choice Plus is highly absorbent, made from recycled paper, water, air and naturally occurring attractant probiotics, so its soft and safe for all paws. The paper pellets are flatter to make them gentler on tiny kitten paws. Once your kitten grows, the transition to Breeders Choice is made smoother as both are made of paper.