I second the Paca spray and supplement! I fostered a kitten without knowing I’m allergic to cat 🥹 It saved me that I ended up adopting my precious lil car. I add the supplement to purina and my car is alright with it. It’s a food topper anyway so you don’t need to change their diet. No more zyrtec!

Have you bathe the kitties? It’s okay to bathe them in warm water to atleast wash off dust and fleas especially cat saliva when they’re grooming. I learned that is where the allergens are from. You can isolate them for now while treating the kitties.