Hello Akiko! I feel your idea of receiving just one device and find out 1st if they all get accustomed to the Litter Robot it’s an excellent approach. Then, if you see them all using it, you can purchase a second 1. A single solitary unit won’t be sufficient to https://cat-accessories-dubai20741.angelinsblog.com/35664196/how-much-you-need-to-expect-you-ll-pay-for-a-good-robotic-pet-cleaning