Thank you for your reply, dear Jerome. I am learning a lot from your site!
Dividend reinvestment plans seemed to me to be a good match for a strategy focused on growing dividends. They allow for exponential growth of income in the case of a long-term investment (assuming long-term stability or growth of dividends). In addition, you avoid brokerage fees and sleep "on both ears", well almost. 
My intention was to invest 5,000 to 10,000 chf and let it work at Clorox through the DSPP. The rest of my portfolio consists of Swiss stocks in various fields. What do you think?
Thank you and have a good evening.
Jean-Louis