Written for the non-technical person, this article describes first what sort of deterioration can occur in the general categories of materials of which weapons are made, and then more particularly metals and wood. Corrosion, general decay, insects and rodents are covered. Under the general heading of protective measures are: oils and greases waxes; lacquers; silicones; chemical films; rust inhibitors; air conditioners and de-humidifiers. -- AATA