If you just shrugged and said "I dunno, I toss it in the blue bin and hope for the best," congratulations — you're most of San Francisco. And that wishful-thinking approach to recycling, affectionately known as "wish-cycling," is actually a bigger problem than most people realize.

Local waste management leaders are trying to set the record straight on what should and shouldn't end up in your blue bin. The short version? San Francisco's recycling program is more specific than you think, and all that optimistic tossing is actually contaminating otherwise recyclable loads. When non-recyclable items get mixed in, entire batches can end up in the landfill anyway — which kind of defeats the purpose.

So about that floss case: generally, no. Most are too small and made of mixed materials that sorting facilities can't process. Same goes for a surprisingly long list of items people routinely blue-bin with the best of intentions — plastic bags, greasy pizza boxes, coffee cups with wax linings, and those tiny sauce containers from your takeout order.

Here's where the fiscal conservative in us perks up: contaminated recycling costs the city real money. When loads get rejected at processing facilities, someone's paying for that — and that someone is you, the ratepayer. Recology, the company with the city-granted monopoly on SF's waste collection, already charges some of the highest garbage rates in the country. The least we can do is make sure the system actually works as intended.

The basics are straightforward: clean, dry, and empty. Rinse your containers. Keep plastic bags out (take them back to the grocery store instead). When in doubt, throw it in the black bin. A little less ambition at the recycling bin actually produces better environmental outcomes.

It's a small thing, sure. But in a city that spends enormous sums on sustainability initiatives, maybe we should start by getting the fundamentals right before launching the next seven-figure green program. Recycling correctly is free. It just requires paying attention — something we'd love to see more of from both residents and City Hall.