Rusty garden furniture can look beyond saving, but you may not need to replace it just yet. One unexpected pantry staple can help tackle even severe rust – and it’s a trick the pros love.
Treacle can be particularly effective on badly rusted garden furniture, especially pieces that can be easily dismantled and soaked.
Here, we explain why the treacle rust-removal method works, how to try it on your garden furniture, and the other kitchen cupboard staples that can help bring rusty metal back to life.
Why treacle can restore rusty garden furniture
It might sound unconventional, but treacle is one of the most effective household ingredients for tackling heavy rust on cast iron or steel furniture.
‘Things that contain acids are generally the best cleaning agents for this issue as acidity is what helps break down the rust, making it easier to scrub away,’ says Jon Saeed from LightingLegends. ‘Surprisingly treacle works a treat, but it tends to work best for furniture that you are able to dismantle and soak.’
Treacle typically contains a pH between 5-7, making it mildly acidic and ideal for scrubbing metal furniture without causing damage.
To use this method, mix one part treacle with eight parts warm water, stirring until fully combined. If possible, dismantle the furniture and submerge the rusty section in the solution.
‘Leave this here for a couple of days or a week, depending on how severe the rust is,’ Jon advises. ‘After that, scrub the rust away with a wire brush or abrasive sponge, wash it clean and dry it completely.’
The long soaking time allows the mildly acidic solution to gradually loosen stubborn corrosion, making it much easier to remove.
Other household cleaning methods for removing rust
If dismantling your furniture isn't practical, there are several other household ingredients that can also tackle rust depending on how severe it is.
For heavier patches, citric acid is one of the most effective alternatives. ‘Mix 50 to 100g with just enough water to create a thick paste, apply it over the rust and cover it with cling film to stop it drying out,’ Jon tells us. Leave it for up to four hours before cleaning with a wire brush and drying thoroughly.
For smaller patches of rust, lemon juice and salt can work well. ‘The salt provides gentle abrasion while the citric acid helps dissolve surface rust,’ Jon says. Keep it on metal furniture for between two and four hours before rinsing clean.
White vinegar is another reliable option for light to moderate rust. ‘Soak cloths in vinegar, wrap them around the affected areas and cover with plastic to keep them damp,’ Jon explains. After several hours, remove the cloths and scrub away the loosened rust with a wire brush.
Finally, for tiny rust specks, ketchup can sometimes do the trick. ‘Because tomatoes are mildly acidic, coating the marks with ketchup for 30 to 60 minutes before scrubbing can help lift fresh rust stains,’ Jon says. It's best reserved for small areas though, as it won't be strong enough to tackle long-established corrosion.
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