Simple but very fun. I like the art style which I found effective for the scope of the game.
The music is nice but I think it stops after one iteration instead of looping, which means you do most of the game without soundtrack.
The UI could be polished a bit with custom font and theme and with some animation. You could have improved the fun by having some additional particule effect when picking a trash bag, having a score that increase with bolder animation as it gets higher, or some score multipliers. I could see some variation from level to level (and I love how you transition seamlessly from one level to another), but the game lake the juiciness that would make me want to continue further to see what is coming next.
Overall I think it does the trick quite well and it is a fun little game to play.
I like how you considered the theme, it is quite unique (from what I could test so far), good job on that :)