Doesn’t all cellulose insulation control pests?
• Most cellulose insulation contains some boric acid or crude borates to provide fungi resistance and to act as a fire retardant. Whether a particular borate substance can or will kill an insect depends on several factors, including the formula, concentration (i.e. dosage), and presentation of the substance. Some cellulose insulation may contain boric acid at insufficient levels to kill some insects, and some insulation may contain sufficient concentration but the substance may not be presented in a form that can be ingested by insects. Without proper testing and registration, it is nearly impossible to know if the borates or borate derivatives in cellulose insulation will control insects. Therefore, only products that have an EPA label and have been scientifically tested, such as T•A•P, can legally claim to control insects.
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