Try spraying with 50-50 dillution of Windex, wait 5 minutes and wash off. This has worked for me even on Hoyam, cactus, etc. I would watch them closely, and if you see active infestation spray. Norma

How interesting. I didn't know Sans could have scale. I was prepping my Moonshine Sans outdoors today to be ready to move back indoors when the weather changes in a few days and I noticed creamy corkish looking patches on some of the leaves. I thought that it looked like scale but dismissed that thought because I didn't know it was possible. I'll have to look again tomorrow to make sure I've removed the offending plants from the crowded pots.