Noisy slide out

I have a noisy slide out. It is electric gear driven (not a Schwintek). I understand that the only lube to be used should be dry. I purchased graphite lube at Home Depot but it doesn't seem very effective. I lubed both sets of rails and gears. I think it decreased the noise somewhat but not as much as expected.
I'm now looking at trying either Camco Slide Lube or Protect-All Slide-out Dry Lube.
Does anyone have experience with these products?