Mattfeld, G.F., J.E. Wiley, III, and D.F. Behrend. 1972. Salt versus browse--seasonal baits for deer trapping. The Journal of Wildlife Management, 36(3):996-998.
Abstract: Capturing white-tailed deer (Odocoileus virginianus) in box traps with rock salt from May to July was as effective as trapping them with browse bait in winter (January to March). In winter, 1,874 trap- days resulted in a new capture every 28.4 trap-days, as compared with a new capture every 31.1 trap- days during 4,137 spring-summer trap-days.