Pest Control Insulation & Rodent Proofing in Denver, Colorado
Keep mice, rodents, and pests out of your attic for good. We install pest-resistant insulation, seal the entry points they sneak through, and clean up after past infestations.
Lower Energy Costs
Healthier Indoor Air
Improved Indoor Comfort
Long-Term Protection
Why Denver Homeowners Trust Grizzly
Colorado’s Front Range puts homes right up against open space, so mice and rodents are always hunting for a warm place to nest, and your attic insulation is their favorite spot. We solve it two ways: pest-resistant, borate-treated insulation that pests will not nest in, and rodent exclusion that seals the gaps and entry points they use to get in. When there is already an infestation, we remove the contaminated insulation and sanitize the space first. For ongoing, recurring pest control, our sister company has you covered.
ENERGY SAVINGS
Pest-resistant insulation protects your home and your energy bill.
YEAR-ROUND COMFORT
Full insulation value and built-in pest protection in one product.
AIR SEALING EXPERTISE
We seal the gaps and entry points rodents use to get in.
MOISTURE PROTECTION
We remove droppings and contamination that harm your air.
PEST-RESISTANT SOLUTIONS
Borate-treated insulation resists pests, mold, and fire.
RESIDENTIAL & COMMERCIAL EXPERIENCE
Pest-resistant insulation for homes and commercial buildings.
How We Pest-Proof Your Attic, Step by Step
Step 1
Free
Inspection
We inspect for nesting, droppings, entry points, and damaged insulation.
Step 2
Personalized Advice
We plan the exclusion, cleanup, and pest-resistant insulation your home needs.
Step 3
Professional Installation
We seal entry points, remove soiled insulation, and install treated insulation.
Step 4
Long-Term Results
Enjoy a pest-free, cleaner, better-insulated attic.
Signs You Have a Pest or Rodent Problem
Many insulation and energy-efficiency issues develop gradually, making them easy to overlook. If you’re experiencing any of the signs below, your property may benefit from a professional inspection.
High Energy Bills
If heating and cooling costs continue to rise, insufficient insulation or hidden air leaks may be forcing your HVAC system to work harder than necessary.
Drafts & Air Leaks
Noticeable drafts around doors, windows, attics, or crawl spaces can lead to energy loss and reduced indoor comfort.
Pest Activity or Contaminated Insulation
Rodents and pests can damage insulation, leave contaminants behind, and reduce its effectiveness over time.
Uncomfortable Attic or Crawl Space Conditions
Extreme temperatures, humidity, or poor ventilation in these areas can affect the comfort and efficiency of the entire building.
Uneven Room Temperatures
Hot and cold spots throughout your property often indicate inadequate insulation coverage or areas where conditioned air is escaping.
Old or Damaged Insulation
Settled, compressed, wet, or deteriorated insulation may no longer provide the protection your property needs.
Moisture, Humidity, or Mold Concerns
Excess moisture in attics or crawl spaces can contribute to mold growth, structural issues, and poor indoor air quality.
Aging Commercial or Residential Buildings
Older properties often lack modern insulation standards and may be missing key energy-saving improvements.
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For Homes and Commercial Buildings
RESIDENTIAL
A pest-free, clean attic means healthier air and insulation that lasts.
COMMERCIAL
Pest-resistant insulation and rodent exclusion for commercial buildings.
How We Keep Pests Out
Many insulation and energy-efficiency issues develop gradually, making them easy to overlook.
If you’re experiencing any of the signs below, your property may benefit from a professional inspection.
Pest-Resistant Insulation
Borate-treated cellulose insulates like standard blown-in but resists rodents, insects, mold, and fire, so pests have nothing to feed on or nest in.
Rodent Exclusion & Entry Sealing
We find and seal the gaps, vents, and penetrations rodents use to get into your attic and crawl space. Insulation alone will not keep them out; sealing the entry points does.
Cleanup & Sanitation
After an infestation we remove droppings, urine, and nesting with HEPA-filtered equipment and sanitize the space before any new insulation goes in.
Ongoing Pest Control
For recurring monthly or quarterly pest control, our sister company handles the ongoing treatments while we handle the insulation, exclusion, and cleanup.
Serving Denver & the Front Range
Questions Homeowners Ask Us Most
Borate-treated cellulose (often sold as pest-control or TAP-style insulation) is the go-to. It insulates like regular blown-in but is treated so insects and rodents will not feed or nest in it, and the same treatment resists mold and fire. We use pest-resistant insulation where it fits your home, paired with sealing the entry points so pests cannot get in to begin with.
The insulation is treated with borate, a mineral that is safe to live with but makes the material inedible and inhospitable to insects and rodents. Pests that try to nest in it do not survive, so they stop coming back. It is a permanent, built-in defense rather than a spray that wears off.
Yes, when it is done thoroughly. Rodents only need a gap the size of a dime to get in, so exclusion means finding and sealing every entry point, vent, and penetration, not just the obvious ones. Paired with pest-resistant insulation and a clean attic, exclusion is what keeps them out for the long term.
Yes. If rodents have been nesting in your attic, the insulation holds droppings, urine, and odors that hurt your air quality. We remove the contaminated insulation with HEPA-filtered equipment, sanitize the space, and then install fresh, pest-resistant insulation.
We handle the insulation side: pest-resistant insulation, rodent exclusion, and cleanup. For recurring monthly or quarterly pest control treatments, our sister company takes care of the ongoing service, so between us your home is covered end to end.
If you live near open space or have dealt with mice before, yes. Pest-resistant insulation costs a little more than standard blown-in, but it does double duty: it insulates your attic and keeps pests from nesting, which saves you the repeated cost of removing rodent-soiled insulation later. Paired with exclusion, it turns a recurring problem into a one-time fix.
Still Have Questions?