Or perhaps encourage "container for life" storage with refill machines. e.g. purchase a long-lasting detergent container, and refill it at a detergent dispensin

Or perhaps encourage "container for life" storage with refill machines. e.g. purchase a long-lasting detergent container, and refill it at a detergent dispensing machine. Otherwise you'd need to provide an easy way or sorting returned containers (by type) so they go back into circulation. Maybe QR-codes on bottles and "smart bins" that pay you for disposing of them?