This cat feeder just died on us.  We have had it for less than a year and faithfully changed batteries as we are sometimes gone for anywhere from a couple days to a few weeks and we wanted to ensure our cat was fed.  It just stopped.  Even with brand new Duracell batteries it does not work.  Don't waste your money.  We are SO unhappy.  Thank good ness we left an open bag of cat food for our kitty just in case something went wrong.