I eitha have my boyfriend do it or I just put a blanket over the couch until my boyfriend takes the hair off my furniture. That's the best way I do it.

VACUUM SWEEP WITH THE ROTATING BRUSH GOING IN THE OUTWARD DIRECTION OF THE FIBER.  THE DIRECTION IS IMPORTANT BECAUSE YOU CAN PUSH THE HAIRS FARTHER INTO THE FIBERS.

A buddy of mine works in the car detailing business. He let me in on how the pros get pet hair out of rugs and upholstery. All you have to do is to wear a pair of disopsable gloves (like the type hospitals or dental offices use). Use your hand and sweep the area repeatedly in the same direction. You will see the pet hair come up and start balling into a "mini tumble weed". Then vacuum up the ball of hair. I use his trick all the time. It gives you professional results. I swear by it!!!  Just be careful when your sweeping the area with your hand. If you go to fast you can get a rug burn on your finger tips.

Vacuum everyday, if you can and vacuum the attachment often as well!  Good luck!