 Whilst at first he is confused at the practice Mr. Burns enthusiastically begins grabbing every can he can find , causing Lisa to believe that he has changed . Eventually , Burns earns so much money that he is able to open his own recycling plant . Burns gives Lisa its opening tour , showing her that it is environmentally sound and made of recycled materials . At first , Lisa is impressed , but then Burns shows her " the best part " . He has taken a cue from a demonstration Lisa had given him earlier , and attached millions of six @-@ pack holders together into a net which he uses to catch tons of sea life , in order to make " Li 'l Lisa 's Patented Animal Slurry " , a multi @-@ purpose edible compound . Lisa is horrified , proclaiming Burns not only still evil , but even more evil when he tries to be good , and begins running through the streets , helplessly trying to get the seemingly indoctrinated citizens to stop the recycling program she herself started . 
