We were given two new guinea pigs over the weekend from a friend who no longer were keen on them. they have settled in so easily and quickly learned to join in the squawking when they want food! I have small clumps of wheat growing all over my garden: we buy straw for their enclosure; this gets put on the compost when we give it a cleanout, and the compost gets put back on the garden for mulch. Obviously a bit of the wheat seeds again and then in turn the fresh grass gets given to the piggies to eat. So organic it makes me gasp!!!