has triggered criticism because of the environmental damage involved in their production. Toiletries Vegans replace personal care products and household cleaners containing animal products with products that are vegan. Animal ingredients are ubiquitous because they are relatively inexpensive. After animals are slaughtered for meat, the leftovers are put through a rendering process and some of that material, particularly the fat, is used in toiletries. Common animal-derived ingredients include: tallow in soap; collagen-derived glycerine, which used as a lubricant and humectant in many haircare products, moisturizers, shaving foams, soaps and toothpastes; lanolin from sheep's wool is often found in lip balm and moisturizers; stearic acid is a common ingredient in face creams, shaving foam and shampoos, (as with glycerine, it can be plant-based, but is usually animal-derived); Lactic acid, an alpha-hydroxy acid derived from animal milk, is used in moisturizers; allantoin— from the comfrey plant or cows' urine —is found in shampoos, moisturizers and toothpaste; and carmine from scale insects, such as the female cochineal, is used in food and cosmetics to produce red and pink shades; Beauty Without Cruelty, founded as a charity in 1959, was one of the earliest manufacturers and certifiers of animal-free personal care products. Insect products Vegan groups disagree about insect products. Neither the Vegan Society nor the American Vegan Society considers honey, silk, and other insect products as suitable for vegans. Some vegans believe that exploiting the labor of bees and harvesting their energy source is immoral, and that commercial beekeeping operations can harm and even kill bees. Insect products can be defined much more widely, as commercial bees are used to pollinate about 100 different food crops. Pet food Some environmental vegans do not use meat-based pet food to feed their pets due to its environmental impact and ethical vegans do not use meat-based pet food to feed their pets due to it being an animal product. This is particularly true for domesticated cats and dogs, for which vegan pet food is both available and nutritionally complete, such as Vegepet. This practice has been met with caution and criticism, especially regarding vegan cat diets because felids are obligate carnivores. Nutritionally complete vegan pet diets are comparable to meat-based ones for cats and dogs. A 2015 study found that 6 out of 24 commercial vegan pet food brands do not meet the Association of American Feed Control Officials (AAFCO) labeling regulations for amino acid adequacy.