What distinguishes a hydraulic sprayer from other application equipment?

The correct choice highlights that hydraulic sprayers can vary in size, ranging anywhere from small backpack units to larger boat-mounted systems. This versatility in size allows them to be used for a wide array of applications, including both small-scale and larger-scale pest control needs in aquatic environments.

The unique feature of hydraulic sprayers is their ability to use pressurized liquid to deliver pesticides effectively, which is especially useful in aquatic settings where precision application is essential to minimize environmental impact. This capability distinguishes hydraulic sprayers from equipment that relies on other methods like aerial applications or air-based dispersion techniques.

By understanding that hydraulic sprayers come in various sizes, it's clear how this flexibility caters to diverse operational requirements, making them an essential tool for pest control practitioners in Washington State and beyond.