Wasps enlisted to target ash borer

Environmentalists and homeowners in Ottawa are cautiously optimistic over the latest plans to control the emerald ash borer.

The Canadian food inspection agency has approved the release of two small parasitic wasps from China in an effort to control the ash borers.

As the CBC's Simon Gardner discovered, environmentalists say the potential long-term devastation from the ash borer makes any risk in introducing a foreign species worth it.