To the expensive food does not unwittingly feed it to the cat to have and that he may not be perfectly round, we have our cat lady the Sure Feed brought - despite the high price. Although she is loving and sweet, but not necessarily overly bright, it has the machine apparently understood from the outset and also a connection between chip and collar with opening the machines produced. The adjustment period was to initially leave the machine open and operate in feeding experiments previously manually switch to open. The faint sound was our cat not bad. To avoid disappointment and failures, we have the machine then put away after eating the first day. The next day the cat was then the feeders via chip used readily tutorial on the collar. We are almost certain that it sometimes opens him out of pure malice, while the cat frustrated sitting next to - and then goes away again 3x sniff! ;)
Downside is (as already described in other Rezis) of pure battery operation - the cost in half a year almost 10 euros and not even the first batery are at the high price of the device there! For durability, I can not say anything, our cat is indeed greedy, but fortunately does not kaput and also does not dare to simply put his head to the cat in the machine in order to mitfressen can. For us, the Sure Feed therefore works excellently.