I do sounding and have a regular client I have seen every 2 weeks for it for years. At first, I was nervous, but now with years of experience under my belt, I am quite confident and into it. I prefer the guy brings his own sounding tools. it is not something I want to use on different clients. bring your own for safety. lately, we have been doing 2 at once on him at the same time. I do it to him while i use an electric toothbrush on him at the same time ( it vibrates faster and stronger than a regular sex toy).