Hiring a professional exterminator is one of the most effective ways to deal with unwanted pests. But once the job is done, many homeowners ask, “How long does the exterminator spray last?” The answer depends on several key factors, including the type of pest, the spray used, and your environment.
Average Lifespan of Exterminator Sprays
In general, most exterminator sprays last between 30 and 90 days. The effects begin immediately, and you’ll likely see a quick drop in pest activity within the first few hours or days. However, the spray doesn’t remain active forever.
The spray can continue as a barrier for several weeks for pests like ants, roaches, and spiders. On the other hand, flying insects may require more frequent treatment because they’re harder to control with surface sprays alone.
Factors That Affect How Long It Lasts
Several elements determine how long the exterminator spray will remain effective:
- Type of chemical used: Some sprays have a longer residual life than others.
- Surface material: Sprays last longer on smooth indoor surfaces than porous or outdoor ones.
- Pest type: Some pests are more resistant and may need follow-up treatments.
- Weather: Rain, humidity, or direct sunlight can break down outdoor applications faster.
- Cleaning habits: Frequent mopping or wiping can reduce the product’s longevity indoors.
How Often Should You Spray?
Even the best exterminator sprays need to be reapplied periodically. For general household pests, professional treatments every three months are often recommended. However, severe infestations may need monthly visits until the issue is entirely under control.
Maintenance Tips After Spraying
To keep your home protected longer:
- Avoid washing treated areas for a few days
- Keep your space clean and dry
- Seal cracks and entry points
- Reduce clutter where pests can hide
Final Thoughts
So, how long does an exterminator spray last? Most treatments protect for up to three months, depending on the product and conditions. Regular maintenance and follow-ups with your pest control provider will ensure your home stays pest-free over the long term.