As Ben says, it's not just Bleach, Borax and Baking soda, it's a method and a mind-set.

It does sound as if your company is actually doing OK. As long as FC is in the "Best Guess" range for CYA=100ppm, it's not a real problem if the kid working the vacuum reads his OTO a bit wrong (Why don't they at least give them Taylor OTOs that read to 5ppm????) Could be worse: He could be using strips. If I were, you, though I'd still check my water, at least every other day.

Using a CYA of 100ppm probably allows them to safely keep their visits down to once a week. At that level, IF you maintain the residual chlorine level (8-15ppm) the FC may well last all week. But your K-2006 gives you peace of mind.

Carl