THOMAS Cat Litter – a purely natural product for reliable cat hygiene. SIMPLY CLEAN, RELIABLE & GOOD QUALITY. Cats are by nature quite demanding when it comes to cleanliness and hygiene. Cleanliness is therefore particularly important when it comes to the cat litter tray. Caring for your cat. Absorbency reduces odour. THOMAS Cat Litter. *Is highly absorbent. *Helps slow the development of odours. *Is a purely natural product. *Does not stick to cat’s paws or coat. A NATURAL MINERAL PRODUCT.