Hi, just wanted to share what worked for me. After years of having strong BO and using spray deodorants and antiperspirants, I stopped using these, and washing my underarms with soap as well. I have been using a soft deodorant (the brand claims to be microbiome-friendly, it's called Byly, it's Spanish, don't know if it's sold in other parts of Europe) and just rubbing and rinsing my armpits with water. It's been already a year and in 5 months or so I started to notice how the BO was significantly reduced. Hope this helps someone with the same problem.   Regards, RMC