Refer to the archives for additional info about sumithrin, resmethrin. An article in this Sunday's Boston Globe said spraying for mosquitoes has begun in some areas of CT. The article did not mention what was being sprayed. Can anybody say what is being sprayed and where in CT? Central Park reopens after spraying By Associated Press Central Park reopened Tuesday after the city sprayed the tourist attraction and city playground to kill mosquitoes carrying the West Nile virus. <snip> The city used the synthetic pesticides, Sumithrin and Resmethrin, which can cause breathing problems for the elderly and people with respiratory ailments. City officials stressed that the chemicals don't pose a risk to the public. Virus-carrying mosquitoes have been found in Central Park and on Staten Island. The discovery marked the first time this year that the potentially deadly virus has been found in mosquitoes in New York City. Earlier this summer, the virus was found in birds and mosquitoes in the suburbs. Last year, the virus killed seven people and infected 62 others in the metropolitan area. In the most serious cases, West Nile can result in encephalitis, or swelling of the brain.