What I did when they were little was TURN the trimmers on - NO SHAVING - and just let them check them out - touch them with their noses - and hear the noise. Of course - don't let them touch the metal part - just the handle
I would just hold the trimmer next to them to get them used to the sound - do this often and just don't try anything until they are used to it -
THEN - only do A LITTLE AT A TIME - if you get ONE ear done and they start squirming - wait a few minutes - PRAISE THEM - give them a treat - then try for the other ear -
it really works.
Janice...You could bring the trimmer in when you have the hairdryer on and just let him hear THAT noise too...
the more they hear it - the less they'll FEAR it. (lol...I'm a poet and dont know it)
One day - they'll just sit pretty for you and won't mind the trimmers at all.