In article ,
Mary Fisher wrote:
snip
Does anyone know of any home moth-proofing system?

Do you have a microwave oven and a freezer?
If you want to be sure something is insect-free, first
microwave it for 1 minute, then freeze it for a day or so,
warm it (in a sealed container) to let eggs hatch, and then
microwave it again.

The advice others have given will help too, but the
best solution I've found is Ziploc[TM] bags or the equivalent
in self-seal plastic. Tupperware{TM} is ideal because their
plastic formula doesn't emit chemicals that plasticize the
contents, and the seal keeps out moisture. It keeps out most
bugs (but flour weevils can chew right through it if they're
already in the flour). Some other companies licensed the
Tupperware systems. Beware of containers that only seem to
seal but have airholes hidden under the handles; they're no
help against moths and carpet beetles.

=Tamar