"PETCO doesn't carry the brand* of pellets my piggies favor, so to tide them over, I purchased a bag of LM ANIMAL FARMS Vita-Vittles. I didn't expect it to go over well; The two of them have consistently given the thumbs down to supposed treat-like extras by eating around the crunchy colored pieces. (In fact, I picked Vita-Vittles because it appeared to have the highest ratio of pellets to extra bits.) Also, like most GPs, they aren't big fans of change.
Surprisingly, they really dig this food! They enthusiastically munched up the pellets, carrots, corn & Vita-Bits. The re-sealable packaging is a bonus.
I give it 4 out of 5 paws (A paw has been deducted from the rating because it is a tad pricey for 5lbs.)
*My GPs usually eat Brown's Traditional Guinea Pig Food."