Which statement about laboratory requirements is false?

The statement regarding investigators being able to house animals for a couple of days without oversight is indeed false. In animal research, oversight is a critical component to ensure the humane treatment of animals, compliance with regulations, and adherence to the principles of the 3Rs (Replacement, Reduction, and Refinement).

Federal regulations and institutional policies require that animal housing and care must be supervised by qualified personnel. This oversight is essential to monitor the health and well-being of the animals and to ensure that all aspects of their care meet specified standards. Allowing investigators to house animals without oversight could lead to significant welfare issues or potential violations of ethical standards and regulations governing animal research.

In contrast, the other statements are aligned with common best practices and regulatory requirements in the care and management of laboratory animals. Specific cleaning policies, the routine removal of dirty cages, and regular inspections of laboratory spaces are all mandated to maintain hygiene, prevent the spread of disease, and ensure a safe environment for both animals and staff.