We bought a great product recently - a
non-pet-store product - from Ikea. It is a lint roller that is really effective in removing pet hair off the cats' furniture and ours. It came highly recommended by
Auntie Rose and ever since we got one, I finally managed to remove cat fur off the sofa without using much time, arm-strength or cleaning agents.
Here it is and how it works. Both the lint-roller and the refill-pack cost less than $10 each.
The lint-roller attachment and adhesive roll comes in one set. After using it on the furniture - the dust is well attached onto the lint-roller (click picture and zoom to see detail of attached fur if that gives you kicks :P). When the outer layer is covered in fur just peel off to reveal new adhesive layer, like scotch-tape.
Remove the roll from the attachment when the roll is used up. Refills come in set of 4 rolls.
These items can be found in the pet section of Ikea. Enjoy lint-rolling!