laurence said:don't use a blower brush!
you can get air blowers... you put the camera in sensor cleaning mode (locking the mirror up) and then aim the nozle at the sensor from a short (but not too short) distance away and then squeeze so it blows the dust away.
easy. done it a few times now.
for anything more problematic then take it to a shop.
don't put any liquid on the sensor.
PS: oystercatchers aplenty today in Cramond
Really? Didn't even know there were oysters there! Or perhaps I'm scared as they might give off that tritium glow that other things in the forth and on the shores of fife have!