You're not alone! This isn't totally uncommon. Our best tip would be to 1) sear our food on medium heat for 5 minutes to release all the aromas and 2) mix thoroughly with their current food (i.e. a spoonful of Viva with current food, just enough so that they get familiar with the taste). Take it very slow—even if they eat it successfully cooked & mixed in, I would increase the amount of Viva you're introducing very gradually (i.e. replace 5% of the meal, then 10%, then 15%) and let them take it at their own pace! Once they're fully onto Viva (cooked), you can ease up on the cooking and transition to fully raw. Oftentimes, our pets just need some additional nudging—so just stay patient with them :) If this is still not working, reach out and we'd be happy to assist!