Defeating Rogues

So Third Edition Rogues can do a lot of damage. With an extra +1d6 for every two levels on every attack. If you are attacked by a band of rogues things get bad since they can easily flank you. So how do you fight rogues?

The second level spell Darkness or third level spell Deeper Darkness totally neutralizes sneak attack because it gives everyone in the area concealment and concealment negates sneak attack. One handy attribute of these spells is that if the object the darkness spell is cast on is inside another object the light isn't radiated. So you can carry around a "Darkness Stone" in your pocket and pull it out when confronted by rogues. Another handy fact is that "Deeper Darkness" has a duration of 1 day per level. This means that you only have to cast this spell at most once every 5 days to essentially neutralize rogues.