Of course we can all achieve results like these, no problem.
I have many before and after pix taken with digital camera.
Pubs, oriental rugs, trashed carpets like new, upholstery etc. It is sometimes difficult to show the degree of difference on a photo due to lighting conditions etc.
And also the sludge drained from the tank.
I have given up showing pix to potential customers.
The results, I find are passed on through word of mouth.
I find more customers are interested in seeing the soil coming out of the wast tank when finished and I make a point of showing them.
John