Nature's Miracle Pet Block Repellent Spray is specially formulated to help reduce training time and break undesirable behaviors by keeping your pet away from treated areas such as beds, furniture, rugs, and outdoor trees or shrubbery. Our long-lasting, concentrated formula contains natural repellent scents that are inherently disliked and avoided by your pet. Nature s Miracle Pet Block Repellent Spray is designed for both indoor and outdoor use and will not harm pets or people when used as directed. Every pet learns differently. For this reason, it is important to consider your pet's learning style when choosing a training method. Your pet may react differently to Nature's Miracle Training Aids.