What would you do if you believe one of your neighbor's children are constantly vandalizing your garden?

ie breaking my garden ornaments and crushing my collection of seashells that I use to decorate my garden...I know it has to be one of the neighborhood children as I live on an out of the way street with no traffic unless you live there....this keeps happening every year and is very upsetting. Last year I called the police and asked them to speak with the children on the street. I'm not sure if they followed through or not....