Hi Maxine, The others are on the right track. Pelvic floor exercises, kegals, whatever they are called, is on the right track. I had a radical prostectomy in Feb and am now 98% dry, and the continence nurses tell me that they are amazed at my progress which is well ahead of what they would have expected.
Prior to the operation, my wife and I were practising tantric sex and part of that, on the male's side, is the use of the PC muscle to control ejaculation and erections. After the operation and as soon as the catheter was removed I started PC contractions again, at least 300 per day. It's easy to do. You can do it anytime and nobody has a clue what you are doing, because the only thing that moves is the muscles itself and small movements of the penis. I do at least 100 quick contractions 3 times a day and then probably another 30 or so, over the day, contracting the muscle, holding for 10 seconds, contracting tighter again for another 10 and then relax completely.
I can now go days and nights without spilling a drop, the only times that I do lose a little is when completely relaxed, such as when having a regular (non sensual) massage or when in a sexual situation with my wife, during which instances, I may expel perhaps half a teaspoonful.
Tell your husband to give it a go. If he has not used this muscle before, he won't be able to do many contractions at first, but it's like any other muscle. It responds to exercise.
I trust that this is helpful
Ron