I purchased this automatic feeder in an attempt to feed my cats a small amount in the middle of the night (to keep them from waking me up).  There were two problems with this: 1) due to the fact that this rotates based on hours rather than at a specific time, I had to set it at exactly the right moment either 6 or 12 hours from the time I wanted it to feed.  I could never set it at 24 hours because I never was awake enough at that time of night to fool with the darn thing. 2) it did not rotate reliably.  Even when it was set for the right time, it often simply didn't rotate.  Generally speaking, I don't recommend this product as it could not serve my purposes.  I have not tried another brand yet so I don't know for sure if there is one that is more reliable - I just know this one didn't fit the bill.