I also use J-Cloths for the steam wand but I find it helps changing them every couple of hours, and I use a clean dry micro fibre cloth for the porta-filter, I’ve got 4 and wash them everyday on a rotation. Hope that helps
Micro fibre cloths. The more expansive the better, they will retain more moisture. Buy a few then you can launder and rotate. Better for the environment!
Microfibre to clean portafilters Buy in packs of 10 usually and change once a year (or as and when needed).
Ditched J cloths years ago. Been using face cloth flannel things for the steam wands (primark or whatever is cheapest - fluffy cotton ones are really nice to use ). Brown coloured ones for the steam wand and black ones to wipe my counters down. Sink rinse and wring as and when needed (a few times a day when we recover from our rushes).
I have a dry cleaner near each cafe that collects and cleans everything. Towels, chefs clothes, aprons etc. Dry clean and rotate.