We bought 2 of these for my father-in-law and his new "pet" Roomba we got him for Christmas. He is old, widowed, lives alone and suspicious of modern technology, but seems amused by his new "pet", but of course this pet roamed his house, and my father-in-law Phil lost him many times. . He got on all fours and found Roomba in all parts of the house and under a variety of things. Personally, we don't think that's a bad thing because 1) he seems quite attached to Roomba, 2) it gives him someβ¦