We entered a contest to reuse milk and juice cartons in the garden. We did turbocomposting, which uses fungi and worms to rapidly accelerate the compost process. First we soaked the cartons until they were completely wet. Then we shredded them and put them in a repurposed plastic bag with coffee grounds and oyster mushroom spawn. Hopefully in 6 weeks or so the fungi will completely digest the cartons at which point we will feed them to the worms, who will chew them up quickly.