Regular use of a balanced vitamin supplement, such as Hagen® Vitamin Supplement Conditioner, is recommended to help prevent any vitamin deficiencies. The diet may also be supplemented with fresh greens daily, as well as a dried hay product such as Hagen® Alfalfa. Hagen® Guinea Pig Pellets comes in a resealable zipper bag to seal in freshness 1.13 kg (2.5 lbs).