There's no way that I would want to blast the innards of a camera with 70 cubic feet per minute of air. In my opinion, that's way too much for the safety of the components in the mirror box and shutter.
If you have "dust spots" on your camera's sensor that the Rocket Blower won't move, then you probably need to do a "wet" cleaning anyway.
The Rocket Blower has one drawback (as do almost all squeeze-bulb blowers) when trying to clean a camera sensor. That is the fact that it sucks in any dust that's in the air and then it blows that dust into the camera.
I highly recommend the Hepa Jet II
blower. While it looks much like a Rocket Blower (minus the fins, of course), there are two major differences. First, there's an extremely fine filter on the rear of the Hepa Jet II blower (the air intake goes through the filter). Secondly, there's a check valve in the nozzle which prevents air from being sucked into the bulb through the nozzle. The net result is that almost all airborne dust is kept totally out of the Hepa Jet II blower and what you blow into the camera is CLEAN air.