Let the grocery stores have bottle/can return machines like everywhere else
Dominion used to have these in the 1990s. I recall the Eglinton Square Dominion having a bottle refund machine in the back by their bakery.
I can see them not having it due to the undesirable clientele it attracts.
For example, there is a woman who is at Warden Station every evening collecting garbage bags full of cans. She must collect 3 bags a day at various stations.
Handling that high of volume takes time and is impractical for alot of people. The homeless and mentally ill also collect cans and bottles en masse. Having those sorts of people walk into stores to obtain money may not always be ideal.