
Second chaumsong - the Pedipaws things are useless on anything bigger than a Chi's paws really (slight exaggeration but not much!).
Use a dremel and get the extension thing which gives you a much smaller tool to actually hold and puts the noisiest bit further away from the dog - the only two things you really need to be careful of is getting fur caught up in the spinning disc, and doing too much in one go which will create a LOT of heat. Ow.
Otherwise, they are awesome and really do a good job, once you get a dog over their distrust of the noise they are ace!