You think that they should be fine to those who are involved in making the environment dirty as well as you are not limited just fine in punishment you also think that there should also be jail as they are prison so they should keep in jail for at least 6 months. If I talk about piles of waste and their effect on other countries than definitely it affect other countries in negative way as you are saying that when was to remains for long time then it starts to decompose and attracts different diseases also when bacterias and viruses attract on waste materials I wish you good luck in this engagement challenge.