We recommend at least a 10-day transition (3-4 weeks for older, sick or finicky pets). Soak a pinch of Sojos, meat and water (or just Sojos and water in the case of SOJOS COMPLETE) and add to the food you’re currently using. Gradually increase Sojos each day as you decrease the other food. Cats can be especially picky and may take longer to adjust to new smells, textures, and tastes. Patience and persistance is the key.