| Indoor allergen | Recommendations for reducing exposure |
| Animal dander | Remove animal from house, or at minimum, keep animal out of patient's bedroom. Keep pet in a room with a HEPA filter, and replace the filter as recommended by the manufacturer. |
| Cover air ducts that lead to bedroom with filters. Replace filters as recommended by the manufacturer. | |
| Use air filters and vacuums with HEPA filters. Replace the filter as recommended by the manufacturer. | |
| Dust mites | Less costly |
| Encase mattress, pillows, and box spring in allergen-impermeable covers. Finely woven covers for pillows and duvets are preferable. | |
| Wash bedding weekly in warm water with detergent or use electric dryer on hot setting. | |
| Reduce indoor humidity to <50%. | |
| More costly | |
| Remove carpets from the bedroom. | |
| Replace old upholstered furniture with leather, vinyl, or wood. | |
| Cockroaches | Use poison bait or traps to control. Consult professional exterminator for severe infestation. |
| Periodically clean home thoroughly. | |
| Encase all food fully, and do not store garbage or papers inside the home. | |
| Fix water leaks. | |
| Indoor mold | Clean moldy surfaces with dilute bleach solution. |
| Fix water leaks. | |
| Reduce indoor humidity to <50%. Avoid use of humidifiers. | |
| Evaporative (or swamp) coolers should be avoided or cleaned regularly. | |
| Rodents | Consult a professional exterminator. |
| Periodically clean home thoroughly. | |
| All food should be stored in sealed containers. Do not store garbage inside. | |
| Repair holes in walls, doors, floors, and block other entry points. |
