DIY vs Professional Bed Bug Control: Why Sprays Fail

15 May 2026 · ShieldGuard Entomology Team
DIY vs Professional Bed Bug Control: Why Sprays Fail

Over-the-counter sprays scatter them. Heat + residual is the real fix for eggs, nymphs and adults.

Most customers tell us, "I sprayed Hit twice, they came back." That's because pyrethroid sprays irritate bed bugs — they run deeper into cot joints and lay more eggs.

Life cycle matters

Eggs hatch in 10 days. One spray kills adults, not eggs. You need a second visit timed to the hatch.

What works

  • Vacuum and heat on seams (physical removal)
  • Residual non-repellent on frame and skirting (stays 60 days)
  • Second visit on Day 12 — free within warranty

Prep checklist

Wash linens at 60°C, empty storage, keep cot accessible. We do the rest — lift cot, open boxes, treat screws and beading.

Needle marks in lines, rust spots on sheets, sweet musty smell — those are bed bug clues. Call before they spread to the next room.
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