In Massachusetts it's
supposed to be 5 cents per, but our local redemption center generally pays just 4 cents, citing increased costs to them. If we call ahead (so they don't get swamped with a can drive), they'll pay the 5 cent rate, with some
mumble-mumble pre-count and sorting, and
mumble-mumble clear bags and boxes we have to buy from them. (The "
mumble-mumble" is their explanation, not @#$#@#%.) Generally we bring over several thousand cans for a morning's work. They add it up and send us a check.
The secret is
mumble-mumble.

No, seriously, lots of advertising, plus have a set day every year -- the Saturday after Graduation Day is good. After a year or two everyone starts saving up for "that robot club at the high school". Greet everyone with a big thank you, and say that every can counts. (This year we added "It's better than Battlebots!") Even the police send over their cans.
I try to show the kids that one can may only be 5 cents, but a bag of them will pay for a sensor, and yes, 4 bags for a Tank Tread, and a whole pickup truck load may pay for a hotel room for a night. It does add up.
Heh: Maybe not a bottle drive, but how about a bottle robot?