The standard Citrus Fresh system as was applied to my carpets involves using a simple everyday upright vacuum cleaner to do a once over before spraying on their citrus cleaner. Then a circular floor buffing machine is used to work the cleaner into the fibers. Then they use the same ordinary upright, plug it into your wall, household dry vacuum to run over the carpet once more. What I observed was that nothing comes out of the carpet with the vacuum they used. Without the hot water and 'wet-vacuum' used by other companies, the DIRT AND GRIME IS NOT TRANSPORTED OUT OF THE CARPET. After seeing the process and after the initial buzz of the fresh citrus scent faded leaving a pungent soapy smell, I decided to hire a real steam cleaner ASAP. The next morning a professional steam cleaning company sucked out the dirt and soap residue left behind by the Citrus Fresh company. And they did it at 60% of what Citrus Fresh charged. I have photos taken during the steam cleaning showing very clearly what was left behind by Citrus Fresh. The magic behind all the 5 star reviews is the technology of the soap that separates the dirt from the fibers and hides it temporarily. Add to that the pleasant citrus fragrance and the $10 discount for reviews and I fell for it. As others have said, the staff is professional and friendly, that is until you ask for a partial refund to cover what I had to pay to have the job completed.