We also have had the problem with CNA's documentation on ADL flow sheets. When I searched the HCFA guidelines for direction on what had to be documented I was surprised to find there is no regulation stating the CNA must document. The only things I found to be required was nursing documentation, and of course you must have a written record of meal consumption and BM's. According to the regs, we must provide ADL's but it does not state routine care must be documented.
So, to solve this problem we did away with CNA documentation. Instead we use a care sheet that describes in detail the care needed for the resident. Just to cover myself legally, I have the assigned CNA initial a sheet daily that states "I have reviewed the care plan and provided the assigned care." I'm not sure what the regulations require in your state, but it is legal in our state and pronto, no more problems with CNA documentation. This allows more time for providing care, saves time for the DON on reviewing the documentation and always fussing because the CNA has not documented. Another advantage is preventing the CNA (though most of my CNA's are great, every facility has one or two of these) sitting in the break room with the ADL book in her lap visiting with her friend and never getting around to charting.
Hope this helps you guys. It has worked well at our facility. The state surveyors frowned on it at first, but could not provide me any regulatory basis for requiring it. Of course we do have task lists on which the CNA reports information to the charge nurse such as recording I&O, BM's, VS, etc, but this is not a part of the permanent record, and therefore reduces the risk of blanks on the ADL sheets which will get you in more hot water.