Good ol' pissing on the side of the tree. Lasts longer than any battery and also wards potential predators off. Dog approves. Spice up that smell with a caramel

Good ol' pissing on the side of the tree. Lasts longer than any battery and also wards potential predators off. Dog approves. Spice up that smell with a caramel macchiato add-on if you're into startups.