Spray. 

For those who do not wish to pre-wet the rock or stick, try Crystal Mineral Deodorant Spray. Use it anywhere on the body to control odor, including feet. Due to its spray format, it can be used hygienically by more than one person. Crystal Mineral Deodorant Spray is made of 100% natural mineral salts, which are hypoallergenic, fragrance-free, non-sticky, non-staining, and can be used by both men and women. If you have sensitive skin or allergies, or simply want a healthy alternative to mainstream, chemical-laden deodorants, this deodorant is for you! It is cruelty free and safe for the environment. Prevents odor safely for up to 24 hours. No residue, no staining, no white marks. Won't leave skin feeling sticky or oily. Made without Aluminum Chloride/Chlorohydrate/Zirconium, Parabens, Phthalates, and Artificial Fragrance. Dermatologist tested. Vegan and Cruelty Free