Tips are not mandatory but they are always welcome. You are free to give cash to the house cleaner and/or add it to your reoccurring charge. There is nothing wrong with not giving a tip to the cleaners. The house cleaners are professional and will always do a good job even if you don’t give a tip. There are quality control standards in place to ensure that is the case and you are getting the best possible cleaning session once the process begins.
In most cases, clients will leave up to $10-20 for the house cleaner after the session.