So we’ve had the same cleaner for the last few years - she comes every other week, and usually at Christmas I pay her double her rate as a tip. She got pregnant, and started training somebody to take over for her. They cleaned together for a few months, and then second cleaner took over full time in the summer. So far so good. Except then second cleaner gave notice and third cleaner was hired - they did it together for one week as “training” and then third cleaner took over full time. The first time her job was ok, the second time it was TERRIBLE - like, I questioned if she’d even come. I emailed the original cleaner to complain and she sent her back to re-do it the next day, and the job was adequate, not great. There is one more cleaning before she’s off for Christmas. So my (very long winded) question is how do I tip somebody who has cleaned my house three times, one time really really badly? And I won’t even know if she did a better job this next time before I tip.