Do Chore Charts Work?

I am trying out the chore chart method this month. As to seeing if this method really works? So far so good but it's only been a couple weeks. The kids seem to be very enthusiastic on putting star stickers on their charts. If you notice on the chart my baby decided to color on it "and make it all beautiful" so that's why there are scribbles. I found the (already in graph form) poster board and stickers at Walmart I only spent like $5 for everything and it was worth it.