I have 3 cats that stays behind when I travel and I need someone to come to my apt to check on litter robot litter levels, empty waste bag, replace with a new bag and clean the litter robot surroundings, check food towers are working and have enough food, check water fountain level and that everything is working as intended. Give the cats some attention and play time if they are up for it. It's important to make sure that the cats are left safe and sound, inside the apt, by locking the doors to outside. They like to try to get outside whenever they can.