1. Extractor fan covers

Kitchen extractor fan covers collect an unbelievable amount of sticky grease. Because they are usually metal or hard plastic, they can normally go straight into the dishwasher.

Place them on the top rack and run a hot cycle. You may still need a quick wipe afterwards, but it removes the bulk of the grease without you standing at the sink scrubbing for half an hour.

Always check first that they are not painted metal, as paint can chip.

2. Fridge shelves and drawers

If they fit, they can go in.

Glass shelves and solid plastic drawers respond very well to a dishwasher cycle. It saves you from awkwardly washing large pieces in the sink and trying not to flood your kitchen floor.

Let them come to room temperature before placing in a hot dishwasher, as extreme temperature changes can crack glass.

3. Light fixture covers

Those glass dome covers on ceiling lights collect dust and insects over time. If they are plain glass with no delicate detailing, they can be cleaned in the dishwasher.

Use the top rack and avoid overcrowding. This works especially well for kitchen light fittings that get slightly greasy.

Do not put in anything with glued decorative elements or fragile edging.

4. Plastic combs and hairbrushes

Remove the hair first.

Hard plastic combs and brush bases can be placed on the top rack. The hot water helps remove product build up that normal rinsing does not shift.

Avoid wooden brushes, padded brushes with fabric backs, or anything with natural bristles.

5. Flip flops and plastic sandals

Plain rubber or plastic sandals can go in on a gentle cycle.

This is particularly helpful after beach holidays or if they have developed that slightly unpleasant summer smell.

Avoid high heat drying, as some materials can warp.

6. Toothbrush holders and bathroom organisers

Even if they look clean, they often harbour toothpaste residue and water marks.

Hard plastic or ceramic holders come out looking brand new. This is much easier than trying to scrub inside narrow compartments by hand.

7. Vent covers

Air vent covers gather dust quickly. Metal or sturdy plastic ones can usually handle a dishwasher cycle.

Make sure they are completely dry before reinstalling to prevent moisture issues inside the wall or ducting.

8. Pet bowls and some pet toys

Stainless steel and ceramic pet bowls absolutely belong in the dishwasher.

Hard rubber chew toys can often go in as well, provided they are solid and not battery operated. The heat helps sanitise them, which is especially important for anything that sits on the floor all day.

Never put in anything with electronics or internal squeakers unless the manufacturer confirms it is dishwasher safe.

9. Stove knobs

Many cooker knobs pull straight off. They collect grease over time, even if you wipe the surface regularly.

If they are solid plastic or metal, they can usually go in the dishwasher. This removes build up from around the edges, which is difficult to clean thoroughly by hand.

Double check that there are no electronic components attached.

10. Gardening tools, small hand tools only

Small metal tools such as hand trowels can go in, provided they are not wooden handled.

This is useful after working with soil that has dried and hardened. Dry thoroughly afterwards to prevent rust.

11. Shower shelves and caddies

Plastic or metal shower caddies often develop soap scum and limescale.

A dishwasher cycle helps loosen residue from corners and joints. It is far more effective than wiping with a cloth.

Avoid anything that is chrome plated with visible flaking, as the coating can deteriorate further.

12. Makeup brushes, with caution

Some synthetic makeup brushes can be placed upright in the cutlery basket on a gentle, low temperature cycle.

However, heat can loosen glue that holds bristles in place. Hand washing is generally safer, so this should be reserved for occasional deep cleaning and only for sturdy synthetic brushes.

13. Drawer organisers

Kitchen and desk drawer organisers collect crumbs and dust that are awkward to remove.

Plastic organisers are ideal for the dishwasher. They come out spotless, including all those corners that normally trap debris.

14. Reusable cleaning cloth holders and sponge trays

These items sit in damp environments and can grow bacteria quickly.

Running them through the dishwasher once a week keeps them hygienic without extra effort.

15. Bin lids, small ones

Small pedal bin lids made of hard plastic can often fit in the dishwasher.

This is especially useful in bathrooms or under kitchen sinks where residue builds up slowly but steadily.

Make sure to wipe off excess dirt first, and avoid running them alongside actual dishes if they are heavily soiled.

How to Decide What Should Never Go In

It is usually about material, not purpose.

Avoid placing in the dishwasher:

• Wood, including wooden handles

• Anything held together with glue

• Cast iron

• Sharp knives

• Delicate crystals

• Electronics

• Vacuum insulated items such as travel mugs

High heat and strong detergent can damage finishes, weaken adhesives, and cause warping.

A Few Extra Dishwasher Safety Tips

1. Always scrape off heavy debris first. Dishwashers are not designed to handle soil or solid waste.

2. Do not overload. Water needs to circulate properly.

3. Use a lower temperature setting if you are unsure about plastic items.

4. Skip the heated drying function when testing something new.

5. Clean the filter regularly. A dirty filter spreads residue back onto everything inside.

When used thoughtfully, the dishwasher becomes less of a dish washer and more of a deep cleaning machine.

The key is understanding materials, checking manufacturer guidance where possible, and using it as a maintenance tool rather than a rescue solution for years of neglect.