Last Updated: March 5, 2026 | Reviewed by The PCC Research Team
In the harsh California sun, standard insecticides evaporate or break down in weeks. To combat this, Demand CS and Suspend Polyzone were engineered with protective coatings. One uses capsules, while the other uses a polymer net.
The 2026 Verdict: Demand or Suspend Polyzone?
Both professional sprays offer 90-day protection, but their strategic application depends on your environmental stressors.
Choose Demand CS If:
Your primary targets are mobile, crawling insects like scorpions and spiders. The capsules “static-cling” to the insect as it crosses the barrier.
Choose Suspend Polyzone If:
You are in a high-heat or high-irrigation area. The polymer film binds tightly to the house surface and resists being washed away by rain or sprinklers.
Quick Navigation:
1. Comparison: iCAP vs. Polyzone Film
| Feature | Demand CS (Lambda-Cyhalothrin) | Suspend Polyzone (Deltamethrin) |
|---|---|---|
| Engineering | iCAP™ Micro-encapsulation | Polyzone™ Polymer Film |
| Survival Method | Dual-walled capsules | Micro-film “Adhesive” |
| Primary Advantage | Transfer to insect legs | Surface adhesion/Wash-off resistance |
| Residual Life | Up to 90 Days | Guaranteed 90 Days |
2. Demand CS: Capsule Technology
Demand CS uses iCAP technology to encase the active ingredient in microscopic spheres. These spheres possess a static charge that makes them stick to the waxy legs of crawling insects. When a scorpion or spider walks across a treated surface, it physically picks up the capsules, eventually ingesting the chemical during grooming.
3. Suspend Polyzone: Polymer Shield
Suspend Polyzone takes a different approach by using a polymer film that binds the Deltamethrin tightly to the surface. This “net” protects the chemical from the elements, especially moisture and mechanical abrasion. It is specifically engineered to resist wash-off from heavy rain or irrigation systems, making it a master of exterior foundation defense.
Pro Tip: For homeowners in the Central Valley, Suspend Polyzone is often the superior choice because it can withstand the triple threat of alkaline soil, 100-degree heat, and daily sprinkler cycles.
4. Heat & UV Resistance
California’s UV index is notoriously high. Both Demand CS and Suspend Polyzone use their respective technologies to shield the active chemical from solar degradation. Without these “coatings,” standard pyrethroids would break down in less than 14 days; with them, your barrier remains lethal for a full three months.
5. Frequently Asked Questions
Q: Which is better for scorpions: Demand CS or Suspend Polyzone?
A: Demand CS is often favored for scorpions because its micro-capsules easily adhere to the waxy cuticle of a scorpion’s legs. However, Suspend Polyzone’s polymer film is superior at resisting the high heat of California deserts.
Q: How long do these professional sprays last?
A: Both are engineered for 90-day (quarterly) protection. In extreme California heat (100+ degrees), you may notice a slight drop in efficacy after 60-75 days, but they far outlast consumer-grade sprays.
Q: Are they safe for pets?
A: Yes, both are safe for pets and children once they have completely dried. Usually, this takes 1-2 hours in the California climate.
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