Has anyone used the host type system combined with a light pre spray (prespray gold) to any effect on sisal medium weave slightly nobbly carpet and does a chemical sovant like dri pro leave marks after drying, my thought here is to try and tackle the odd stain then dry clean (host system) which will help to dry out the solvent. The customer who i saw this afternoon had slight trafic marks on stairs and would be happy if this was removed . Carpet value £3000.00