R-Zilla. Reptile Calcium Spray Supplement. Easy way to add calcium for stronger bones. Spray-on liquid absorbs easily through reptile foods. Choose direct droplet feeding for a quick calcium treatment. Just a spray a day for better bone strength. Be certain that prized reptiles enjoy the extra boost of healthy calcium a UVA and UVB light can't always provide. Use the convenient spray bottle to apply Calcium Supplement to any reptile food (including crickets, mealworms, mice or vegetables) wait 15 seconds and feed as normal. This proven formula is readily absorbed into virtually any reptile or amphibian's bloodstream, assimilated directly into bone tissue. In extreme cases, three drops applied directly to a pet's mouth will effectively treat common calcium deficiencies.