This product provides me a peace of mind knowing my cats are being fed when I can't be there to put their food out.  I can stop by the market without rushing or run errands without concern for them being hungry.  I think the size is perfect and the style is accommodating.  My cats enjoy the fact that their bowl is consistently being filled. It's relatively quiet when it's operating which is also a plus. I would recommend this product as a must have.  I don't know how I have gone all these years without one.