Well, I can tell you that I've used Host, Capture and duoP in my own home.
When we were lucky enough to be owned by a German Shepherd Dog for 14 years, we used to do the dry cleaning more often, at least once a year, but sometimes up to every 3 months, depending on how much mud or dirt we had in the carpets. Luckily, she was really well house trained and we never had to deal with accidents, but we found out that dry cleaning the carpets did keep allergens down, so big win.
I found that the Host machine (2 rollers, not the big industrial thing they use in commercial settings) was better and easier to use, particularly in stairs, but the only way to do that around here is renting, which does not appeal to us.
We did not much like Host dry cleaning "powder" though, it's good and does a good job, but it seemed to us that the system took longer to dry and took more effort to remove dirt/stains.
Capture (powder and pre-treating liquids) was really good and easy to use. I haven't bought it recently (2-3 years) because I got a very big tub of the powder and jug of the pre-treater a few years ago and still have it.
We really liked the duoP powder and the brushing machine, which we ended up buying and still have and use. I don't use the duoP powder so much because it involves ordering it and going to my favorite vacuum cleaner dealer which is a bit far from us, so I end up using Capture more often, but duoP dries faster and it's lighter and easier to vacuum up, in my opinion.
I have allergies to wool, so all the carpets and rugs in my home are synthetic, which might or might not make a big difference on the results, but I suppose even if I had wool carpets I'd be nervous to drench the carpets or rugs with so much water like the other cleaning methods do. YMMV too.
In any case, one of the things I love about the "dry cleaning" methods is that I never had to worry about the dog (or even people) not being allowed to walk on the carpet until it dried, and it dries very fast anyway (30-60 minutes).
My recommendation is to at least take a look at all the systems (Host, Capture, duoP) etc because my experience with the sites is that they don't give all the good recommendations in only one place, so I ended up using recommendations of one system with the other ones, particularly when it came to patterns for brushing and vacuuming effectively.
SEBO duoP:
https://www.sebo.us/carpet-cleaning/duo-brush-machine/dry-carpet-cleaning-machine-duo-powder.aspx
Capture:
http://www.captureclean.com/Pages/Home.aspx
Host:
http://www.hostdry.com
This video shows what a typical application at home is like, particularly the vacuum and brush North-South, then East-West, then North-South:
I particularly like this demonstration, it shows the difference very well:
The pictures below show before and after "dry cleaning" the throw rugs we used right by the front door to test for wear and tear and stain removal. One of these days we will finally replace the carpet on the second floor, we thought we were going to do that after 5 years of buying the home and it's now nearly 17, but we will get there eventually.
Cheers,
-- Paulo.
