Insulating with wool

permed at permed at
Tue Sep 11 04:24:33 EDT 2001

I recall reading that the commercial sheepswool insulation is impregnated 
with borax - as well as a fire retardant it is repellent to pests and 
rodents. Borax is also added to insulation made from shredded waste paper 
for the same reasons.

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