The floors in my truck had deeply pitted surface rust from sitting with moisture under the carpet for a long time. I had tried wire brushes in a drill, various angle grinder discs and none really did a great job . All made a huge mess and required wearing a dust mask and washing up when done. Cruising the internet, I was looking at Evaporust and other similar items but some suggested using vinegar and leaving it soak. I didn't really believe this but had about a gallon of 30% vinegar left from trying to clean the windows so figured I would give it a try.
I covered the area with a thick shop paper towels, soaked the area with the vinegar and covered it with a plastic bag then went to bed for the night. This morning, I was really surprised at how well it worked. I did not take a before pictures but this should give you an idea of how large the area was.
I am doing a second soaking now to try and get the rest of the rust removed. I am calling this a win
.
You must be registered for see images attach
With the plastic bag covering the area
You must be registered for see images attach
With the bag removed
You must be registered for see images attach
This is after I cleaned up the towels and rinsed the area, washed and wiped it with a cloth towel. Didn't try using a wire brush or anything to clean it better. The one video I watched showed using various vinegar strengths and showed plain household distilled white vinegar works about the same and is much more cost effective.