We got this for our bunnies to feed them when we are gone. We've used this probably a dozen time, and every time I'm afraid it will malfunction so I have people come down to check on the bunnies but it always works! I did draw an arrow on it so i could figure out what way it turns - thus if I only want to fill up 1/2 the containers. It would be nice if it was made with the arrow - but a Sharpie works just as well.