Trying to Find Natural Male Fertility Kits

My wife and I have been having problems conceiving a baby. We have tried every thing that we can think of, but now we think that I may have a fertility problem. I am trying to find natural male fertility kits. I have never liked to put harsh chemicals or drugs in to my body and I do not want to start now. However, I do want to do every thing that I can to have a baby with my wife. I have begun looking on the Internet and found a few kits for increased fertility and over all health and I think I will order one soon.