Parents think its a bad idea

Im a 16 year old and i’m still in high school. I work a pretty much minimum wage job and have recently brought up to my parents that I want to start a trashcan cleaning service in my area. We live in a town thats very friendly and people are very supportive of small businesses, and they have a huge facebook group that is perfect for advertisement. Ive also done speech and debate for 4 years so I have great speaking skills for door knocking. My parents are saying this is a bad idea and a waste of my money and time because they don’t believe people will want their trash bins cleaned. I planned to charge $20 each time or $30 a month for me to do it 2x a month. The start up would only cost me around 600 dollars, and that includes business cards and media design. Do you think I should pursue this side hustle, or try to find something different.