Well, as much as I hate to say it, I believe the one word answer that comes to my mind for this question would be: subterfuge.
The complex that I'm MS for has a long reputation for tenants being at odds with the maintenance staff. Needless to say, this is an image that I have worked very hard to eradicate. I truly believe that the key to tenant retention is in maintaining good tenant to maintenance staff relationships. If tenants believe that the staff are "snooping" or "out to get them", then you can beat your bottom line that they will do what it takes to keep the "complex police" from seeing their cleanliness violations. This would, and has, certainly included not calling our office about what a tenant sees as minor issues until a major issue crops up. This situation leads to service calls with such an eclectic list of problems that it would be comical if it were not for the fact that it means I'm losing a Tech for hours, or even days on end, that I had not planned for. Several of these types of calls in a row can not only throw my maintenance schedule off, but at a crucial time of the month, can threaten to keep us from making critical turn-over deadlines.
My solution to this issue was to clearly explain to both the maintenance staff and management in strategic/objective-oriented terms, that from here forward we would report any and all issues as we always had but that we would need to manufacture alternate ways and means of bringing the issue out in the open. Also, that we would need to keep the discoverer of said issue as far removed from that alternate method as possible.
We have annual inspections, state inspections, mortgage company inspections, insurance company inspections, pesticide inspections... The list of sources of "blame" for finding cleanliness issues is so long, that I see absolutely no reason why we would undo tenant-staff trust for any reason other than a situation that presents a present danger to the tenant themselves or their neighbors.
Also, by focusing on the importance of the implementation of a strategic objective: creating and maintaining trust between the tenants and the maintenance staff, I avoided the tension, finger pointing and defensive opposition which may well have accompanied fixing this longstanding issue. While, only time and persistence in accomplishing this goal will undo the years that have created the situation, we have already seen a marked improvement.
Cleanliness problems are of the utmost importance for both the longevity of the asset as well as more present pest and health issues, but if a small amount of deceptive production can preserve the staff-tenant relationship, then I believe it is worth the extra time and effort that goes into it.