Bicarbonate of soda, commonly known as baking soda, is a staple in many British households, lauded for its versatility as a natural and affordable cleaning solution. From deodorising fridges to tackling mild stains, its applications seem endless. However, cleaning experts are increasingly highlighting that this seemingly innocuous powder can be detrimental to certain surfaces, potentially causing irreversible damage and dulling their appearance. Understanding where not to use bicarbonate of soda is crucial for maintaining household items and ensuring longevity.
One of the primary concerns stems from its abrasive nature. Despite appearing fine, bicarbonate of soda consists of tiny crystals that can scratch delicate surfaces. This makes it unsuitable for cleaning glass, including windows and mirrors, where it can leave a hazy residue or fine scratches visible in direct light. Similarly, modern ceramic or induction hobs, often made with scratch-prone glass-ceramic, should be cleaned with specialised hob cleaners or a soft cloth and mild washing-up liquid to avoid surface damage. The abrasive quality also extends to polished metals; silver and gold items, including jewellery and cutlery, can be discoloured or have their protective coatings stripped away, leading to a dull finish.
Natural stone surfaces, such as marble and granite countertops, are another category where bicarbonate of soda should be avoided. These materials are porous and can react negatively with the alkaline properties of baking soda. Over time, repeated use can lead to etching, leaving dull spots or weakening the stone's sealant. Instead, pH-neutral cleaners specifically designed for natural stone are recommended to preserve their lustre and integrity. For wooden furniture and floors, bicarbonate of soda can strip away protective finishes and waxes, leaving the wood dry, dull, and more susceptible to damage from moisture or further abrasion. Gentle wood cleaners or a damp cloth with a small amount of mild soap are far safer alternatives.
Furthermore, aluminium cookware, while robust, can discolour and develop dark spots when cleaned with bicarbonate of soda due to a chemical reaction. This is particularly noticeable on unanodised aluminium pots and pans. For these items, warm soapy water and a non-abrasive sponge are usually sufficient. Even cleaning tools themselves can be adversely affected; microfibre cloths, prized for their ability to trap dirt and grime, can become clogged with bicarbonate of soda particles if washed with it, reducing their effectiveness and absorbency. It is best to wash microfibre cloths with laundry detergent designed for synthetic fabrics.
The widespread appeal of bicarbonate of soda as a 'green' cleaning option often overshadows the specific chemical and physical properties that make it unsuitable for certain materials. While it remains excellent for tasks like cleaning drains, deodorising carpets, or scrubbing sinks made of stainless steel or enamel, caution is advised when tackling more delicate or chemically sensitive surfaces. Opting for purpose-specific cleaners or simpler, milder solutions like warm water and soap can prevent costly damage and ensure household items remain in pristine condition.
Source: Cleaning experts and industry advice