Minimizing the need for sensor cleaning
The best way to clean the sensor is, of course, not to get it dirty in the first place! While it’s not really possible to totally eliminate sensor dust, there are some things you can do to minimize it.
Dust gets into the camera when you change lenses, so it’s wise to be cautious when changing lenses, especially in dusty conditions. You can change lenses quickly, with the camera pointing downwards for example. If you must change lenses in very dusty conditions, you can do so in a protected environment, such as inside your car rather than outside, or even inside a protective plastic bag. Another alternative if you know the conditions are going to be bad is to choose a wide to telephoto zoom, which may minimize the number of lens changes that you need.