Not all can be used with hwe. Some foam like a mofo. These are ok Vac away green, dirtaxe, grease hog. Bonnet pro rocket, omega?. Atomic. Procyon. One earth. All can. Worth it? Ehhh maybe. Better off using crystalizing rinse imo. Encap chems are 4+ oz. per gal. Some are 10. And how much polymer is actually left in the carpet to do its job is more the question.