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R, D. SJOGREN, Ph.D. <br />D~reclor <br /> <br />METROPOLITAN MOSQ UI TO CONTROL DISTRICT <br />2380 WYCLIFF STREET "ST. PAUL, MINNESOTA 55114 · 612-645-9149 <br /> <br />w. J. CAESAR <br />Business Adrnin. <br /> <br />March 1, 1989 <br /> <br />Jim Gr omberg <br />City of Ramsey <br />15153 Nowthen Blvd NW <br />Ramsey, MN 55303 <br /> <br />Dear Mr. Gromberg: <br /> <br />This letter is to summarize our telephone conversation of <br />March 1. <br /> <br />Waste tires are an important breeding location for Aedes <br />_tLi~~L~ (Tree hole mosquito), the mosquito that can <br />transmit LaCrosse encephalitis, a disease of children. In <br />order for this mosquito to use tires for breeding sites, the <br />tires must hold water, and be located in a shaded area. ~ <br />Tires stored dry (indoors), or in full sunlight are not <br />suitable breeding sites for this mosquito. Adult Tree hole <br />mosquitoes seldom travel more than 1/2 mile from where they <br />developed. <br /> <br />I have enclosed information on B.T.I. as you requested. This <br />mosquito larvicide has been used in other parts of the <br />country to control mosquitoes in tire dumps. However, the <br />Metropolitan Mosquito Control Distrct does not regularly <br />conduct this form of control in tire dumps. We work with <br />local and state government to have the tires removed and <br />disposed of properly. If this is not feasible, we consult <br />with the property owners on ways to minimize mosquito <br />production by moving tires into sunlight, reducing shade by <br />removing brush, or storing the tires where they will not <br />collect rain water. We also monitor the sites on a regular <br />basis to determine their mosquito population status. <br /> <br />I have also enclosed general information on LaCrosse <br />encephalitis and its prevention.. If you have any questions, <br />please call me at 645-9149. <br /> <br />Sincerely, <br /> <br />David Neitzet <br />LaCrosse Encephalitis Prevention <br />Program Leader <br /> <br />MEMBER--AMERICAN MOSOUITO CONTROL ASSOCIATION <br /> <br /> <br />