Some engines are designed for such conditions though. The CT7 engines of the Apache are, for instance. They have a separator built into the inlet which picks out sand and other FOD from the intake air. On the CT7 equipped aircraft I worked with, the bypass duct sent it all into the oil cooler instead (if the prop and the engine didn’t get that sparrow, the oil cooler would!), but that’s a different story. The fact that the rotor blades of the Apaches can’t take the sand anyway is another different story...
I thought I was doing good trying to avoid those airport hotels... and look at me now.