thanks for the reply, i,m relatively new to carpet cleaning, i have encapped a couple of jobs with good results but they were only lightly soiled, its on a domestic , i haven,t tried to sell it but i cleaned her mums last week using encap and the results were good, they are both impressed with the quick drying aspect but i did tell her that encap may not be the best method, it says on the dynamall site that it can be used as an extraction chemical but it says to put it in the tank..