Moth-proofing pianos and other musical equipment

For several years I have been fighting a loosing battle with wool
moths.  I have used the pheromone lures which trap the male moths.
Lures are very expensive and not long lived and have not totally
eliminated the problem.

At this time I am mainly interested in protecting a small grand piano.
I have some lung problems and spraying a lot of strong insecticides
might finish me off before the moths give up.

Howard Towlson