Before setting up your hwe machine apply a decent spray to all the heavy stains. 15 minuets later when your ready to cleane, spray lightly the whole carpet,aggitate,Iuse a sebo as I do mainly domestic and rinse with just water.I use onestep finline which is very good on red wine stains.Any stains that do`nt shift I spay with ZAPIT,when I`ve come to the end of the room I then go back and aggitate those stains, works a treat every time.I know you`re supposed to clean straight away,but this really cuts down the scrubbing time.AMTECH UK are the only m.s that I`ve used,so you`ll have to test and compare with other brands,and let me know how you get on.
Hope this helps
RICE.