The SensorSweep is the best sensor brush on the market today. It accepts and holds the charge longer than any other brush. You can use a Rocket-blower, canned air or the supplied charging paper to easily produce the static charge. Then you simply glide it over the sensor and the loose dust will actually jump up into the bristles. It sounds easy and it is.Compared to other dry sensor cleaning tools, a quality sensor brush will last a lifetime, it"s a one-time purchase. We only use the finest filaments which enable the brush to maintain its shape.You can spend a ton of money on high-tech sensor brushes, but they don"t perform any better than the SensorSweep.