Solid stylus cleaners: Extreme Phono vs. Onzow Zer

I've used Extreme for over a decade on a Lyra B and now on a Benz Ruby 3. Some of the remarks above are accurate, sometimes difficult to fumble opening the clamshell, goop falling out when sent, etc. However, I never had extra goop on the stylus and use it regularly (every five records). In between uses I use a dense record brush. I am considering using the Magic Eraser method (up and down only) instead of the record brush as the brush may pull the cantilever (or not, my cartridges last more than 2500 hours). I recommend the Extreme for best results.

P.S. I use another Extreme clamshell on 78s every play. Even presumably clean sides have grit or grime which appear after use. Do not mix 78 and LP cleanings in one clamshell. The grit and grime of 78s is significant and sometimes as large as the LP stylus.