Invoice based on a Cleanliness scale? What does it mean?

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We price by a cleanliness scale first, and then add the estimated time to clean based on the size of the home. This scale represents homes that have not been cleaned regularly and have excessive traffic, such as larger families. Trash accumulation, smudges on walls, mirrors, glass fixtures, dust accumulation that hides the true color of surfaces, debris left by foot traffic, and pets. 

We price by a cleanliness scale first, and then add the estimated time to clean based on the size of the home. This scale represents homes that have a little more than normal build-up from busy families or single individuals who are usually not home enough to clean up occasionally. Will show a slight difference from scale 1-3.

We price by a cleanliness scale first and then add the estimated time to clean based on the size of the home. This scale represents homes that need cleaning to maintain minimal dust accumulation and smudges on a few surfaces, with minimal organizing.

We price by a cleanliness scale first and then add the estimated time it takes to clean based on the size of the home. This scale represents homes that are maintained on a regular basis, and sanitizing is mainly the priority, with the upkeep of dust accumulation in areas forgotten most of the time.