Ranchi Municipal Corporation (RMC), which religiously uses fogging machines on VIP residential premises, has come out with an explanation as why it has left commoners to mosquitoes’ mayhem in the capital. According to official data, the corporation spends around `6,000 for one time usage of a fogging machine. It includes spraying a mixture of 5 litre diesel or petrol with 600 milliliter of chemical lasting for a period of two hours. Besides, the market rate of petrol or diesel, RMC has to bear `1,000 for purchasing one litre chemical.