What is Diamond Sponge made of and how do I dispose of it?Updated 20 days ago

TL;DR
High-density PU foam and silica-alumina coating. Not recyclable in most kerbside bins. Reuse for dirty tasks, then place in general waste.

Material breakdown

• Core: High-density PU foam block
• Coating: Silica-alumina abrasive film (the “diamond” grit)

Why it can’t go in the recycling

The bonded abrasive film can’t be separated from the foam at standard facilities, and mixed materials are rejected by most recycling streams.

Best end-of-life options

• Reuse: Downgrade a worn sponge to outdoor grills, tools or garden pots.
• Dispose: When the coating is smooth or the block is crumbly, place it in household rubbish.