Please stop littering Navan

Dear Sir - My name is Briannagh and I live in Athlumney Castle. When I walk home from St Anne"s School every day, I pick up rubbish. I have been doing this for nearly one month and I still pick up over a half bag every day. I cannot understand why people drop litter on the ground and it makes me very cross. Please stop. Briannagh Lynch, aged five years, Athlumney Castle, Navan.