A. Of course, the obvious contributor would be heavily soiled dust mops and wet mops. Or possibly, using wet mops with a heavy concentration of detergent each time and allowing them to dry unrinsed.
From there, I would confirm that the exact mix ratio of your disinfectant is followed. Too heavy of a dilution could leave residue. And make certain it is, indeed, a quat and not a phenolic, commonly used in health care facilities such as yours and prone to damaging floor finishes. Finally, check overuse of a spray buffing solution or restorer.
Normally, a clear water rinse followed by burnishing will remove sticky residues. Just make sure the burnish pads are rotated, cleaned, and replaced as necessary. The old adage that if a little bit does a good job then a lot more will do even better is certainly counterproductive when it comes to floor maintenance. More than likely, overuse of products is the cause of your sticky problem.
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