waste that rots and can be easily broken down by bacteria e.g. food and vegetable waste.

Those components of the waste stream likely to become putrid.

waste which rots

Discarded materials that decompose readily under aerobic or anaerobic conditions.

Waste being food or animal matter (including dead animals or animal parts), or unstable or untreated biosolids. This waste is able to be readily decomposed by microbial action and, during the process of such decomposition, often creates offensive odours.

Any waste which is subject to biological and chemical decomposition or decay.