We recommend for first time customers to be there if you can. It helps things go a little smoother just in case the cleaners have any questions. If you are not able to be there, then the cleaners will be able to figure it out. As for continuing customers you do not need to be there. Most people who set up continuing service give us a key or set up permission to enter through their building. This is something you need to be comfortable with. Keys are kept in the office in a secure lockbox when they are not being used on service days.