I have a Rotovac Power Wand and I'm assuming they are very similar. I have a Truck Mount and when I'm using my Rotovac I turn down the water pressure to about 200 psi. The wand is so sweet that you can clean carpets with nearly any pre spray and have fantastic results. Find a high PH prespray around 10 and prespray all the carpets. Then clean with your wand and rinse with a slightly acidic rinse and your good yo go. Their are special chemicals for special stains like coffee,tea,urine and oils. You will need a good solvent spotter and a reducing agent for coffee and tea. Make sure you Pre spray! Take an IICRC class and you will be good to go.