DH are about to go away for the weekend, will be back Sunday sometime. My sister is coming over Saturday and Sunday to feed my 2 boys. Left plenty of food and Dreamies, but feel wracked with guilt! They have a microchip cat flap so can safely get in and out, but have never left them before for so long with nobody in the house. Should I leave the radio or TV on for them? I feel like a neglectful parent, what else should I do!?