Mixing product lines
Is it okay to mix product lines from the same brand?
I’m currently feeding Purina One mixed fillets wet food and Purina One coat and hairball dry food. Was thinking of upgrading their dry food to Purina Pro Plan sterilised but I am worried about nutrient deficiencies mixing different lines as I did read somewhere they are formulated to be fed together.
Purina Pro Plan wet food is twice the price of Purina One so out of the question with feeding that.
Thanks for any advice!