can you compost confetti?
Sometimes — plain paper and tissue confetti composts in weeks; metallic, mylar, and glitter confetti is microplastic, full stop.
breaks down in 1–2 months scattered into a pile
C:N ≈ 175:1
which bins can take it?
- hot pile yes
- cold pile yes
- worm bin yes
- bokashi no
- tumbler yes
- curbside caution
- curbside: Only if it's unmistakably paper — facilities can't pick foil flecks out of a load, and mylar contaminates the batch.
why?
Paper confetti is tissue or newsprint punched tiny, and that size is a head start — decomposition speed tracks surface area, so the pieces vanish in weeks. The party-store standard, though, is metallized PET film cut to catch light, and every foil fleck that enters a pile survives to be sifted out or spread on a garden bed. Tissue dyes are water-based and meaningless at this dose.
how to prep it
- Sort out anything shiny, metallic, or plastic-feeling
- Compost only confetti you know is paper or tissue
- Dampen it first so it doesn't blow away
watch out for
- Metallic and iridescent confetti is metallized PET film — one handful can fleck an entire batch of finished compost.
- Biodegradable confetti claims vary wildly: rice-paper and dried-leaf confetti are real, while coated eco-glitter mostly isn't home-compostable.
often confused with
- Biodegradable Glitter — Most eco glitter is coated modified cellulose that still needs industrial composting — don't lump it in with paper confetti.
quick answers
Can I compost confetti swept up after a party?
Only if you're certain every piece is paper. Post-party sweepings mix in metallic confetti, glitter, and food debris, and nobody sorts a dustpan speck by speck — when in doubt, the whole sweep goes to the trash.