Picture: https://media.mnn.com/assets/images/2015/07/KBHPant-Copenhag... ("pant" is cognate with "pawn".)
That's the biggest problem for me. It was a fortune back then. My family would collect bottles all year and cash them in for a vacation. But back then it was 10c per bottle... 30 years ago. Today, it's still 10c per bottle. With inflation, that's more like 5c per bottle. Couple that with the rise in bottled water and other non-carbonated drinks that don't have deposit on them plus a lot of store brands and specialty bottles that require you to go to multiple stores to return, a whole day of collecting bottles might only net you $5. And then you have to spend another day going back and forth between Family Fare, Kroger, Meijer, Walmart, Target, and maybe even a specialty bottle store.
Even for kids, a lot of times it's not worth it for just a few bucks.
There were a few kids doing this, so you had to be quick and know the locations where many bottles were to be found. The best spots were usually the places where the teenage "cool" kids who considered returning bottles below their dignity were hanging out, and you had to be brave enough to approach them. To this day, I remember the pure joy of finding a motherload of bottles, maybe up to 10 at once, and always leave bottles on the top of garbage cans in the city for the homeless :)
If we spent a few hours doing it we'd get a couple hundred dollars easily. But damn I've never smelt anything worse than a blue massive trash barrel filled with beers cans that are all a year or older. Worth about $20 on it's own though.
Must cost a fortune to clean up the trash after people have been through them, way more than the few (euro)cents you get back...
They've also basically completely mitigated the fraud aspect of this by having all machines in all grocery stores scan the UPC on the bottle to determine whether it is manufactured in Sweden. The deposit is pretty significant there too, 1 SEK, which is equivalent to about 10 cents right now.
I grew up in Norway, and while Norway certainly isn't free of homeless people, I never saw this despite a widespread bottle return system (in fact, the Norwegian company Tomra has a majority of the world "reverse vending machine" market, primarily focused on bottle returns).
Norway have had a return rate in the 95%+ range for years in large part because a variety of groups of people see empty bottles as an income source.
I think this to a large extent have also culturally solved the problem: while some people certainly throw their bottles in the bin, there's little reason not to instead put your bottle down next to it, because you know it will get picked up.
So instead of collecting your deposit, you can now click a button to see if you win a price (up to 1 million NOK), and if you lose you donate it to the Red Cross.
I remember as a kid in the 80s collecting bottles at events etc, back when a bottle of Coke was 6kr so the 1 kr deposit made a difference. I feel happy these days to press the donate button though when I am in the country.
I personally will not be bothered redeeming in Oregon, since all cans and bottles have to be manually fed into the reading machine. Coming from California where I can just bring a trashcan full of cans in and get my money, I find the system a complete waste of time.
I separate out my recyclables for the canners and leave them out for whomever wants to put in the effort of standing in front of the coop for an hour.
[1] https://www.oregon.gov/ohcs/ISD/RA/2017-Point-in-Time-Estima...
https://fox61.com/2018/05/17/connecticut-trails-other-states...
What a lovely system we've created.