Last Friday Mom set up the dry erase weekly calendar to have checkmarks when someone feeds Billy, so he isn't fed extra as sometimes happens. In theory it is a great idea, but not so much when I went to erase the marks put there last week and discover the Monday evening and Tuesday ones don't come off. Apparently, someone (i.e. Mom!) used the permanent marker instead of the dry erase ones. The sharpie is in the organizer the calendar is on, but it was in a different slot and it is a retractable style marker and not one with a cap like the dry erase ones we have.
Luckily I knew about using rubbing alcohol to remove permanent marker after having to do it off of pumpkins when working at the pumpkin festival last year and a group decorated theirs before realizing the pumpkins were not free.
Calendar is now set back up with dry erase markers and sharpie is moved to junk drawer.