Playing Devil's advocate for a minute (Hey, it's what I do for a living :P) I can think of several reasons why they would want you to get an "official" recycling box.
1) Compatibility with the pickup equipment, the recycling trucks are built to accept only certain sizes and types of boxes and every non standard box slows down the run as they have to deal with the oddballs.
2) Weight, whether through a union negotiated contract or health and safety principles of the employer the workers may in fact be limited in the amount of weight they are expected to lift, again oddball containers make it harder to judge safe or non-safe.
and those are only the reasons I can think of off the top of my head...
NefCanuck
1) Compatibility with the pickup equipment, the recycling trucks are built to accept only certain sizes and types of boxes and every non standard box slows down the run as they have to deal with the oddballs.
2) Weight, whether through a union negotiated contract or health and safety principles of the employer the workers may in fact be limited in the amount of weight they are expected to lift, again oddball containers make it harder to judge safe or non-safe.
and those are only the reasons I can think of off the top of my head...
NefCanuck