Wild Harvest Guinea Pig Advance Nutrition Diet Advance Nutrition Wild Harvest Advanced Nutrition Diet for Guinea Pigs provides the ultimate nutrition your Guinea Pig requires for developing and maintaining good health. Our scientists developed a unique formula containing a tantalizing array of high fiber pellets and a delicious mix of healthy fruits and vegetables to provide your pet with a well rounded diet. With this formula they ll receive important protein vitamins minerals and fat needed for a strong healthy body. Fruit Amp Formula Wild Harvest Advanced Nutrition Diet for Guinea Pigs now offers even more health and nutrition for your pet with the addition of our new Fruit Amp Formula. Fortified with antioxidant nutrients Fruit Amp provides your Guinea Pig with even more added nutrition to help support and maintain overall good health.