In recent years, the concept of Integrated Pest Management (IPM) has gained importance as a way to prevent and mitigate damage from pests. Although the concept of IPM originated in the field of agriculture, it has spread into the world of museums. This approach should prioritize increasing awareness of pest damage in daily activities. It involves placing importance on basic activities such as cleaning and maintaining facilities and paying careful attention to and inspecting objects, ensuring that an environment prone to pests and fungi is not created. If damage does occur, appropriate measures should be taken one by one or in combination with others, in accordance with the state of damage. In Japan, methyl bromide was used as an insecticide starting in 1955; it was replaced in the late 1970s by a mixture of methyl bromide (86%) and ethylene oxide (14%), which soon became a certified drug for cultural property. However, when methyl bromide was included in the Montreal Protocol's list of substances that deplete the ozone layer, developed countries, including Japan, were obliged to phase it out by the end of 2004.