Passwell Guinea Pig Delight Bar Healthy, high fibre treat bar designed to promote chewing action and digestive health in guinea pigs. Designed to promote chewing action and digestive health. Feeding Guidelines Feed ad lib as a treat to pet guinea pigs. Small pieces can be broken off and fed out to avoid any wastage. Use as a treat to encourage increased consumption of fibre-rich hay diets. Pack Size Individual bar minimum weight 40g net.