After 30 years in hospital maintenance, nothing much surprises me anymore. But... I was blown away by how simple and effective this device is. I'm keeping mine right next to the tub.
This thing REALLY works!! We tried a 6-ft-long-monstrosity vacuum from Oregon Hot Springs that worked like *!$! - well it didn't work. The Silt Sucker fits nicely in our spa cabinet and it cleans the tub in minutes. Buy one, you'll love it!
You're going to love the SiltSucker. It works great and it picks up everything, including pine needles. As a bonus it's fun to use. Sometimes I'm disappointed when I don't find things in the spa to suck up. Don't hesitate getting one!