I would highly suggest that you get a good quality lab block. It is going to save you money. Mazuri Rodent 6F is a good choice. Call Mike's Feed Farm in Paterson. They will special order it for you and you'll just need to find a way to get there and pick it up. Last time I bought from them about a year ago it was $25/25lb bag. That is far cheaper than the crap from Petco/Petsmart.