Match the cadence to the situation
| Situation | Recommended cadence |
|---|---|
| Standard single-family home, no past issues | Quarterly (4x/year) |
| Older home or chronic ant/spider activity | Every other month (6x/year) |
| Mosquitoes only (warm-weather barrier) | Monthly April–October (6–7x) |
| Past bed bug problem, in monitoring phase | Monthly for 3 months, then quarterly |
| Brand-new construction, no history | Annual or one-time inspections |
| Restaurants / food service | Monthly (commercial protocol) |
Why quarterly is the sweet spot for most homes
Three reasons:
1. It matches PA pest cycles. Spring ants → summer wasps → fall mice → winter spiders. Quarterly catches each cycle at peak activity. 2. Residual products last. Modern microencapsulated perimeter sprays (Suspend Polyzone, Talstar) hold up 90 days under normal weather. Re-treating sooner is wasted material. 3. You get free callbacks between visits. If something pops up at month 2, you get a no-charge visit. So you're really getting 4 scheduled + as many callbacks as needed.
When to upgrade to every-other-month
- Two-story home with a finished basement
- Wooded property with chronic spider / ant pressure
- Older home with a stone foundation
- Recurring carpenter ant or mouse history
- Anyone allergic to wasps or with severe spider phobia
The math: every-other-month is ~50% more cost but catches issues 1 month sooner on average. For homes with history, that's almost always worth it.