We have 5-8 year old berber carpet in a short sell home we purchased, the carpet is on a list to replace, but until then, we needed to get some pet stains removed while potty training a puppy. The carpet was pretty gross.
I called eco fresh because I just wanted to make sure there wasn't anything to distract my puppy from being trained. The owner told me berber was pretty hard, I told him I didn't expect the stains to be gone, just remove the pet stains.
The carpet looks amazing. Its still berber, something I wouldn't choose, but it looks great, I'm not embarrassed about having guests over now, and its actually moved the carpet down a peg or two in our list of home renovations. Thanks Eco Fresh!