To control mosquito breeding in water bodies near railway tracks, a Mosquito Terminator train is pressed into service by the Northern Railway from August 18. Moving at a speed of 20 kmph, the train will spray insecticide along the tracks. The train is running for four days between August 18 and September 16, covering the city in eight trips. A South Delhi Municipal Corporation official said the train with a power sprayer truck provided by civic agency is mounted on a wagon to spray the insecticides on water bodies.