Animals. Animals are used to predict the toxicity, damage, and other safety variables as well as the effectiveness of the product. But now scientists have developed many new effective and better alternatives to animal testing, and of course cruelty-free to any animal, or person. Some alternatives to the use of animals in testing include, using computer models and simulations. Using Vitro tests methods and models based on human cell and tissue. The use of human tissue in toxicity testing is more accurate than the animal models. Non-animal tests are more cost-effective and convenient. In contrast of waiting weeks for results when using animals, you can get results within three minutes to four hours using InVitro International’s Corrositex (synthetic skin) method. Cruelty-free products are more environmentally friendly. In toxicity testing researchers breed, test, and dispose of millions of animals as hazardous waste.