A new guide spells out how residents should dispose of 180 materials for recycling, reuse or refuse in Brighton and Hove.
Brighton and Hove City Council said its new guide details what to do with everything from aerosols to mattresses and nappies to Tetra Paks.
It also gives advice on what to do with materials like rubble, plasterboards, asbestos, bathroom fittings, furniture, white goods, batteries and metal.
Cllr Gill Mitchell, chair of the council’s environment, transport and sustainability committee, said: “I’m sure many of us have been in the situation where we don’t know what to do with a certain material or item. Do we put it in our recycling? Bin it? Give it away?
“Now, armed with our new A-Z, we’ll all be able to do the right thing and help protect our city and our planet better, and ensure we’re making the best use of the materials we no longer want or need.”
The council said its A to Z guide is part of a drive to help residents recycle the correct materials.
It also hopes to avoid contamination of recycling bins by giving residents a clear idea of what materials go where.
Cllr Mitchell added: “Although our recycling rate is the highest it’s ever been, we must aim much higher. We’re hoping this guide is a game changer in helping us all to recycle more and reduce contamination.”