Also sweets can upset their digestive tract. Urine and feces residue will glow in the dark with this light. This will organically decompose it. It will take several days to work. Be sure to have your dog tested for heartworms, then put on a preventative.
Pets get allergies too.
If your pet scratches or chews more than normal, see your vet. Sprinkle with baking soda. Use precautions when treating your yard with pesticides and herbicides. Keep your pets away from these. If they do come in contact with these, wash your pet thoroughly and call your vet.