Protects tree trunks 1" to 4" thick. Almost invisible from a short distance, these tree wrap protectors have a pepper scent repellent infused into the vinyl that repels deer before they rub their antlers on your trees. Harmless to animals and humans, these tree guards have a 4% infusion of white pepper integrated into the vinyl. The vinyl is made in the USA, strictly conforming to EPA regulations, making them non-toxic, containing no heavy metals that can leach into your root system, and often found in foreign-made tree guards.