I had urinary retention prior to surgery and my doctor told me I had to self-cath so urine doesn't seep into the bladder. I was devastated at the time that I had to do this every day. However, my concerns were overblown. Insurance paid for the catheters. But I suggest you order a deposable, lubricated catheter with a cude tip (if you still have your prostate). The process was painless and took a few minutes. At the time, I watched what I drank and how much.