Supermarkets; the Pet Trade (Pets at Home, Just for Pets, Suma Whole foods); Wholesalers; and Cash and Carry Our problem children are difficult animals with health problems We did not only test all 20 brands for any suspicious materials we put them to the test as well With the lump litter products we checked and examined how much litter is used to bind a certain amount of water As these can also find their way into the body, when the dust is breathed in, we have acknowledged that and have deducted a mark