Relax with this classic THC free Hemp CBD! How to use & where to buy free trial? Make sure it is free of additives. This means you can be sure your product won’t contain harmful additives or chemical residues that might hurt your pet’s health. According to a 2017 World Health Organization (WHO) report, it’s safe and well-tolerated by animals. Look for organic, so it’s less likely to have pesticides, fungicides, or solvents.