I have been using static eliminator products for many years, starting with the Milty ZeroStat back in the early 80's. I use the Furutech Destat that I purchased back in 2007 which is the first generation of the product. It has worked flawlessly for 15 yrs. When used properly the surface of a record will become neutral, no static charge present.
There seems to be some confusion on how to use the Destat. You can not place the record on your turntable and then use the Destat. You must hold the record in your hand and then use the Destat. I do 2 revolutions around the record and only on the side that I am going to play. Doing the both sides at the same time will not better your results. When you flip the record over to play the other side, you will still have to use the Destat again to neutralize that side of the record.
To validate the process, I use a Simco FMX-004 Electrostatic Field Meter Static Tester. Placing the record on the turntable then using the Destat, static charge is still present on the surface. It can be anywhere from 15 to .10 depending on the record. Point being there is still static present on the record surface.
If you hold the record in your hand and then use the Destat, the record surface will become totally neutral, no static charge present on the record surface. Using the Simco the meter reads 0.00 across the whole record. This is the same for every record that I do with the Destat, it is consistent and repeatable.
I am a little confused when people state that some other product works better than the Destat, how? You can not get any better than neutral. The record surface can not be more neutral. So I am still trying to figure that one out.
Just for the record I think the Milty ZeroStat is a great product but I never got the record surface to be neutral with the Milty ZeroStat. It worked to reduce static on the surface but there was still some static present.
After playing a record, I measured to see how much static was now on the surface, it would vary from record to record but it would range from 2.0 to .10. So yes, some static did return to the surface but mainly because of the stylus moving through the grooves. That is a small amount of static which is easy to remove with the Destat.