How do I know which concentration to buy?

Consumer (RTU/concentrate) products are formulated for homeowner application rates. Professional-grade concentrates require accurate dilution — mistakes in either direction reduce effectiveness or create safety hazards. If you're new to pesticide application, start with ready-to-use formulations and work up to concentrates once you understand mixing and rates.

Can I mix this with other pesticides?

Tank mixing is common in professional applications but requires compatibility testing and label compliance. Never mix pesticides unless both labels permit it. One safe and effective combination: pair an adulticide with an IGR — they attack different life stages and don't interfere with each other.

How long does the treatment remain effective?

Residual activity depends on formulation, surface, UV exposure, and temperature. Micro-encapsulated formulations last longest (4–12 weeks). Wettable powders and emulsifiable concentrates typically last 2–6 weeks outdoors. Indoor applications on non-porous surfaces can persist significantly longer.

Is this product safe for use around pets and children?

All pesticides have some level of toxicity — 'safe' means used correctly according to the label. Keep children and pets out of treated areas until completely dry (minimum 2–4 hours for most sprays). For households with infants or chemically sensitive individuals, discuss low-exposure options (baits, dusts, IGRs) with a pest management professional.

Methoprene

⚖️ Educational use only. Always read and follow the full product label — the label is the law under FIFRA. Full disclaimer → | ⚗️ Mixing Calculator →

🏷️ Brand Names — Same Active Ingredient

Precor IGR — Zoëcon — professional flea/mosquito IGR

Altosid Briquets — Zoëcon — mosquito larval control

Nyguard Plus — MGK — professional broad-spectrum IGR

Martin's IGR — consumer generic methoprene

🎯 What It Kills

✓ Fleas (prevents egg hatch)✓ Mosquito larvae✓ Stored product insects✓ Clothes moths✓ Fungus Gnats

⚙️ How It Works

Methoprene is an insect growth regulator (IGR) — it mimics juvenile hormone preventing insects from maturing to reproductive adults. Does not kill adults but breaks the breeding cycle. Must be combined with adulticide for complete flea control.

⚗️ Mixing & Application

Precor IGR: 0.5–1 oz per gallon for indoor carpet/floor treatment. For outdoor flea treatment: 0.5 oz per gallon. Altosid Briquets for mosquitoes: 1 briquet per 100 sq ft of water.

⚗️ Open Mixing Calculator →

⚠️ Safety

⚠ Not an adulticide — must combine with a kill product for adult fleas
⚠ Very low mammalian toxicity — one of the safest pesticide classes
⚠ Do not apply to water bodies without checking local regulations for mosquito use

📋 Safety Data Sheet (SDS)

📄

Altosid — Safety Data Sheet

The SDS document preview will appear here once the first-page image is uploaded to your server.

📎 To display the SDS preview:
1. Open the SDS PDF for this product
2. Screenshot or export page 1 as a JPG image
3. Upload to /sds/methoprene-sds-page1.jpg
4. The image will display automatically here

📄 Search for this SDS on CDMS →

📄 Altosid — Safety Data Sheet · View the complete SDS document above or download below

📄 CDMS Label & SDS Database 📄 EPA Label Search

📚 Sources: EPA Pesticide Labels · NPIC Pesticide Info

Published: Jan 1, 2025 · Updated: Apr 7, 2026

Methoprene — Precor, Nyguard, Altosid