In the city of Toronto we don't use prescribed burns to control pests. We use it to help regenerate the oaks in High Park. Where you have all the urban values around trees, generally the pests.... When a tree dies, we need to do removal operations, and it has to be strategic to not damage any of the infrastructure around. We do use sprays and injections to control pests before trees die.
On October 18th, 2018. See this statement in context.