Maximizer Plus Mineral deer mineral has had extensive research done both on captive and wild deer. Don't be fooled by other salt-based products on the market. Maximizer Plus is specifically designed with over 20 micro and macro nutrients- many in precise proportions to one another. The specific blend of nutrients is directly responsible for deer growth; by implementing this deer mineral on your property, you can rest assured knowing your bucks are getting everything they need to reach their full genetic potential and your does are able to raise vigorous healthy fawns.