The City Council's Recreation and Community Facilities Manager, John Brenkley, says the Council uses the insecticide sparingly to control insects and worms in its sports grounds.
When spraying occurs on an average of once a year, the Council closes the playing field or sports ground for a mimimum of 24 hours, engages a registered contractor and applies the insecticide only when wet so it can penetrate the soil quickly.
"We use Best Practice when applying the insecticide and take all precautions," John says.
"Endosulfan assists in the provision of a good durable surface to our grounds and there is no other alternative that meets the type of grass that grows in the Manawatu or our weather conditions."
Its use is supported by the New Zealand Sports Turf Institute which is New Zealand's foremost authority on sports ground preparation.
John Brenkley says the City Council would not knowingly use any insecticide that endangers health however if ERMA, the Environmental Risk Management Authority, decided it was not suitable for sports grounds then Councils would stop using it.