Select SpotClean models come with a Deep Reach tool attachment. This is intended for thick carpets and therefore has a stronger spray. The Tough Stain Brush attachment is meant to be held about 1" above the spot you want to clean. However, the Deep Reach attachment is meant to be in contact with the carpet at all times while spraying. If it’s held above the carpet even a little bit, its strong spray will cover a large area!