i
used a knife just to scrape a bit off so everyone could see it . All i can say is since cleaning with the Hoover and Vax there has been no build up of dirt on the kirby my carpet is brown with really thick pile about an inch thick and i have found that the only vacuum cleaner that vacuums it well is the kirby i did try a Hoover senior it cleaned well but was hard to push .I will not use the rug renovator again because i dont want all that gunge left on my carpets .Heres another photo i have cleaned one side with a green pan scrubber

used a knife just to scrape a bit off so everyone could see it . All i can say is since cleaning with the Hoover and Vax there has been no build up of dirt on the kirby my carpet is brown with really thick pile about an inch thick and i have found that the only vacuum cleaner that vacuums it well is the kirby i did try a Hoover senior it cleaned well but was hard to push .I will not use the rug renovator again because i dont want all that gunge left on my carpets .Heres another photo i have cleaned one side with a green pan scrubber
