The invention provides methods and compositions useful for attracting predatory insects. The method may further include installing the at least one conservation device to reduce consumption of the at least one utility resource by the utility consumer. The method further includes adjusting the position of at least one of the plurality of control points with respect to a second plane that is substantially orthogonal to the first plane and repeating the step of generating the interpolated curve until the interpolated curve is tangentially correlated to the first point and to the second point. The control unit is designed to generate the control signals in accordance with the rotor position signal. The logic implementer is programmed to operate the pneumatic valve to either communicate the pneumatic outlet with the pneumatic inlet of the pneumatic pump through the flow restrictor and the pneumatic line, or communicate the outlet of the pneumatic pump with a component of the dialysis system.