“When a substance or object is biodegradable, it can be broken down naturally by temperature, sunlight or microorganisms such as bacteria. This means it won’t clog up landfill forever.
For a product to be certified biodegradable, it must decompose into natural elements within a reasonably short period of time – typically under a year.”
However, even biodegradable baby wipes should not be flushed down the toilet, as they take a long time to decompose in a sewerage system environment and consequently clog up pipes and machinery. They are also harmful to wildlife, who often mistake them for food.
Biodegradable products are designed to break down on landfill, so should be disposed of with your general household rubbish.