Originally Posted by HoboMaster
You take a utility knife and cut them into squares at the folds..... walla, small-stackable cardboard.
That is the dumbest shit I have ever heard. At least offer decent advice man or GTFO. Its Japan - everything is automated- Really, what he should do is take them out into the middle of the street, tip lighter fluid on them, then set them alight. Automated Fire station comes and puts them out, automated hello kitty road sweeper sweeps them up.
You could also take them to the Japan version of the SPCA so that they can use them to house orphaned Pikachu's.