Could be a couple of things. The peroxide would have continued to work after he left, assuming the pics were taken from a wet carpet.
Considering it was a CRB only the results are very good. Besides the large spots the overall color did improve also. What we don't know from the pic is if the light remaining spots are wear or soil or both.
John I just spoke to you last week on the phone when I placed a small order for the kit with the Rocket, Omegazyme spotters and bonnets. Got it a couple days ago. Will mine have the added polymer in it?
All of the Revive iT Oxy Spotter is now the new stuff so it has a big bump in peroxide and an additional grease cutter. Not sure if your sample was the original or the new.
New formula has a light citrus scent.
Just FYI , ive made revive rocket my companies official pre spray for both HWE and encap. We're loving the results and versatility of all your products. Plus we've been able to simplify and pair down our chemical selection.