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Question DetailsAsked on 8/24/2017

CAN I ONLY SPRAY ATTICC DUE TO DROPS AND URINE RATS AND NOT REMOVE INSULATION DUE TO IS VERY EXPENSIVE AND WE DO

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You certainly "can"- but no promises on the results, and without removing the pheromones and urine smell unless you have absolutely blocked off every way the rats can get in, likely to have more come back - and the only way to definitely ensure you have blocked all access points is usually to gut the insulation down to bare wood and drywall. Also - if pellets or staining is evident come sale time, it could be a big red flag for potential buyers.
Here is another similar question with answer FYI, including the cost issue - though if a lot of rodent contamination I would add probably about $250-400 to the cost for removing the contaminated materials, in addition to the new insulation cost. http://answers.angieslist.com/Should-... If you do decide to do a partial job and see if it works, I would at least have all the pellets vacuumed up (using a shop vac with coarse screen bulb over end to hold the insulation down (assuming fiberglass batt, not loose) while the smaller particles and dust are vacuumed up), removing and replacing the insulation in the heavily soiled nesting and bathroom areas, fogging with disinfectant, and spraying a light mist of Boric Acid all over the insulation - both absorbs/neutralizes odors, most insects are killed by it, and acts as a sometimes pretty effective rodent repellant. But would likely take a bunch to get full attic coverage - probably around 20 pounds I would guess, though only costs about $1-2/lb in larger boxes. If your insulation is loose fill, I guess you could have jsut an inch or so vacuumed up, the treatment done, then blow back in an inch to make up for the loss. If you do get the insulation totally removed, unless in a pretty mild area or really tight on $ (which your questions indicates may be the case - got cut off), having all openings into the attic from below sealed off for typically a couple hundred extra $ is generally well worth the cost - both in energy savings, and in reduction of moisture from the household air getting into the attic and possibly causing mold/rot issues.

Answered 1 year ago by LCD




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