When I used to use my diaphragm more a long time ago, there were certain types of Ortho spermicide (the cream version was the troubling one, as opposed to the clearer gel, which was tolerable) that were irritating to me and him both, particularly if I used too much of it around the edges of the diaphragm.

My husband has an appointment Friday the 16th in the afternoon to get a vasectomy. This thread is what motivated him to do it, too. (That and fear of a late-in-life pregnancy and the fact that that would be downright dangerous for me.)