Those with short-haired dogs/Groomers...

[beeniesmom]

I use a soft and shirt haired bristle brush for my two.
Important thing to get that dead fur off is brush them backwards or against the grain.

[CathyBogart]

I use a shedding blade for Star, whose hair is medium-length. Combined with a slicker, it seems to do the trick.

[Glacier]

I have a Bamboo undercoat rake. It's amazing! I love that thing!

[IRescue452]

I use a shedding blade.