Using this dog t - shirt is super easy. Just slip it over your dog's head and adjust it to fit comfortably. When it comes to maintenance, machine - wash it in cold water with like colors. Use a mild detergent and avoid bleach. Tumble dry on low to keep it in good shape. As for precautions, make sure to check the size chart before purchasing to ensure a proper fit. Don't leave your dog unattended if the t - shirt has loose parts that could be chewed off and swallowed.