Authorizes mosquito control districts to enter without hindrance upon lands adjacent to lands within the district in carrying out certain powers and duties, and to cut or remove shrubbery or undergrowth to carry out pest control objectives. Establishes that mosquito control districts may treat places where mosquitos are found or likely to exist using integrated pest management methods, a process requiring use of the most appropriate pest control methods and strategy in an environmentally and economically sound manner to meet pest management objectives.