I haven’t noticed this, but now I probably will.
It’s strange.
I can understand why you find it surprising that people conscientious enough to floss you would litter. Although, sometimes people floss just because the food caught between their teeth is uncomfortable.
I remember the cigarette Q’s @jca2 is referring to and it was shocking to me how many people defended the littering or admitted to not thinking there was anything wrong with it for years until they finally had an epiphany.
It’s so large I guess it’s tough to hold onto it until you find a trash can? Where you see them is it difficult to find a trash can? I hate trash cans with a flap, my trash sometimes doesn’t make it into that trash can. I either hold onto the trash or the trash might wind up on the ground near the trash can, and I feel badly about it. Finally, at some stores near me they got rid of trash cans with flaps, and I noticed a lot of McDonald’s got rid of them. Especially indoors it’s ridiculous to have them. Outdoors I can understand why it might be necessary to keep flies and bees and animals away.
There’s a difference between trash around a trash can and random trash not near a trash can. I’m not excusing litter anywhere, but trash near a trash can is either overflow or someone had trouble getting the item in the trash can.