Hi there Tonnie, I am sorry regarding your allergy, that has to be really hard. Regarding the automatic feeders I can provide you with ideas to your 2 cats. The Super Feeder 3XL Combo means that you can ignore filling the hopper frequently as it comes along with a 1.5 https://manuelwxyyw.magicianwiki.com/1711179/cat_food_royal_canin_an_overview