Mosquito Surveillance, Control, Consulting and Public Education

1. Responsibility of meeting with designated Town representatives to determine areas previously surveyed and found to be a problem and to identify other potential problem areas. Where applicable, the Town will provide a list of previously treated areas. 2. Surveillance using a non-chemical inspection method that involves classification of mosquito breeding sites, larval presence and distribution surveys, and adult mosquito biting and trapping surveys, as well as identifying mosquitoes to species. Larval surveillance would be conducted while the employee was undertaking larviciding. 3. Conduct weekly adult surveillance; if not to be tested for arboviruses, then to be used to measure species composition and population size of adult mosquitoes. The data can later be used in addition to larval sampling to determine efficacy of program. Adult surveillance tools to be used include CDC light traps, dry ice traps, gravid traps and resting traps. Assume 100 surveillances. 4. Testing during the mosquito season, on a weekly basis; the successful bidder should conduct larval surveys. This means that all sites that have been known to contain mosquitoes in the past are checked for the presence of mosquito larvae. This is accomplished through the use of a standard dipper (350 ml). Other methods of direct inspection include searching for new larval habitats (i.e. artificial containers) and developing mosquito habitats (i.e. water that has been blocked from running). 5. Records of larval stage and numbers per dip would be recorded with monthly reports. A few samples should be saved for later ID. Landing rates of adult mosquitoes are also noted. Further, light traps are placed at various locations around the county. Mosquitoes are removed from the light traps, counted, and identified. 6. Discuss the level of the problem with people in the tested area. Assume onehundred (100) tests. 7. Treatment including source reduction and the application of a larvicide. The type of larvicide used to control mosquitoes is dependent upon the developmental stage the insects have reached when discovered. Larvae in the 1-3 instar stages are treated with either Bti (a bacteria) or in a catch basin environment with BtI/Bsph extended-release briquettes equivalent to FourStar 90. Fourth instar mosquito larvae and pupae must be treated using a different method, as the larvicides already mentioned are not able to affect their development at these stages. A light mineral oil is applied in cases where the mosquitoes have developed past the 3 instar stage.

Division 10 -

Specialties, Pest Control Devices.