Household pests and damp problems, solved step by step
PestCodex explains what is actually in your walls, closets, and bathroom — and what really gets rid of it. Every guide is checked against university extension, EPA, and CDC research, not product marketing.
Latest guides
- How to Get Rid of German Cockroaches: Baits, IGRs, No Bombs
To get rid of German cockroaches, use gel baits in many pea-sized dots plus an IGR, and skip sprays and foggers. Switch baits if roaches last past 2–3 weeks.
- How to Get Rid of Roaches in an Apartment That Shares Walls
To get rid of roaches in an apartment, bait your unit, report it in writing, and push for building-wide treatment. One study cut infestations from 49% to 12%.
- Condensation on Walls: What Causes It and How to Stop It
Condensation on walls forms when humid indoor air hits a surface colder than its dew point. Keep humidity at 30–50%, vent moisture out, and warm cold walls.
- Musty Smell in House: How to Find the Source and Get Rid of It
A musty smell in your house almost always means moisture and mold growth somewhere. Find the wet spot, get humidity under 50%, and clean small areas yourself.
- Carpet Beetles: How to Identify, Find, and Get Rid of Them
Carpet beetles are 1/8-inch round beetles whose bristly larvae eat wool, fur, and pet hair. How to spot them, find where they breed, and clear them out.
- How to Get Rid of Clothes Moths (and Stop the Larvae for Good)
To get rid of clothes moths, find the larvae, then freeze items at 0°F for a week, hot-wash or dry-clean them, vacuum hard, and store wool sealed.
- Silverfish in Bathroom: Why They Show Up and How to Dry Them Out
Silverfish in the bathroom mean it stays too humid: they thrive at 75% humidity or more. Run the fan, fix leaks, keep it under 60%, then dust if needed.
- How to Get Rid of Mice in the Attic and Clean Up the Insulation
To get rid of mice in the attic, trap along joists, seal roofline gaps over 1/4 inch, then wet and bag soiled insulation per CDC. Never vacuum droppings.
- How to Get Rid of Mice in Walls (Without Making It Worse)
To get rid of mice in walls, trap where they exit the wall, then seal every gap over 1/4 inch with metal. Skip poison indoors: mice can die inside the wall.
- How to Keep Mice Out of Your Car (and Off Your Wiring)
To keep mice out of your car, remove food, park away from tall grass, and trap nearby. Mice fit through 1/4-inch gaps, so check the engine bay often.