Which of the following is NOT an example of excessive cellulose debris?

The correct choice is based on understanding what constitutes excessive cellulose debris, which can attract termites. Excessive cellulose debris refers to the presence of large quantities of organic materials that termites feed on, such as untreated wood and plant matter.

Piles of firewood are typically organized and used for a specific purpose, such as heating or cooking. When firewood is stored properly, away from structures and with adequate airflow to prevent moisture retention, it does not present the same risks as other forms of cellulose debris. It is usually not left in an excessive amount for extended periods in a way that would create an attractive environment for termites.

In contrast, tree stumps, form boards left in concrete, and wood touching structures offer either a large volume of cellulose or create conditions where moisture can accumulate, which are favorable for termite activity. Tree stumps can decompose over time and provide a steady food source, while form boards left behind can create a hidden food supply that may not be readily removed. Wood in direct contact with soil or structural materials can also facilitate termite access, making these options examples of excessive cellulose debris.