Recycling needs to be empty enough not to spread food or liquid onto other materials, but it does not need to be spotless. Sensible preparation balances recycling quality with water and energy use.
Quick answer: scrape out food, empty liquids and give accepted containers a quick rinse when residue remains. Keep paper and card dry, and use specialist routes for hazardous contents.
Empty comes first
Finish or safely dispose of the product before recycling its packaging. Part-full bottles, jars and tins can leak during collection and sorting.
Do not pour oils, paint, chemicals or medicines down drains. Their packaging and contents need the route stated by the council, pharmacy or hazardous-waste service.
A light rinse is normally enough
Use the end of normal washing-up water where practical. Remove visible food but do not scrub packaging until it looks new or run a dishwasher solely for recycling.
Allow excess water to drain so paper labels and nearby card do not become unnecessarily wet.
Paper and cardboard
Do not wash fibre packaging. Remove food, plastic liners and heavily greasy areas, then keep accepted paper clean and dry.
A clean cardboard sleeve can sometimes be separated from a contaminated tray, but follow the component labels and council instructions.
Smells and pests
Rinsing cans, jars and pet-food containers helps prevent odours, insects and residue inside the bin. Keep lids closed between collections.
Food-waste caddies should use the liners and cleaning routine approved by the local service.
Know when not to recycle
If residue cannot be removed safely or the material is not accepted, use the correct residual or specialist route. Wishcycling can contaminate good material.
Check local guidance after moving home because bin colours and preparation rules are not nationally identical.
Before collection, review every component rather than treating the pack as one material. A removable film, absorbent pad or pump may need a different route even when the main container is accepted.
When guidance changes, use the latest council page and the instructions for your property. Keep a short household recycling list near the bin so everyone follows the same rule.
A good household routine is more useful than occasional perfect preparation. Empty items as they are used, separate obvious non-recyclable components and store dry recycling where rain, food and cleaning liquids cannot reach it.
If an item repeatedly causes uncertainty, search the council’s recycling A–Z or contact the waste team. Do not rely on a packaging colour, triangular mark or advice from another council area.
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Official sources
Sources checked: July 2026. Local services and national requirements can change.