Size: 2.5lb Jug
Sale price$34.28


Altosid Pro-G is a mosquito control product that successfully eliminates infestations over time with regular use. It's a larvicide, meaning it targets the larvae and prevents them from maturing into breeding adults. It works similarly to Altosid Briquets and contains the same active ingredients but in an easy-to-use, granular formulation. It prevents adult mosquito emergence and reduces the population, providing up to 30-day protection.

How Altosid Pro-G Larvicide Works

This effective larvicide contains the active ingredient s-methoprene, a chemical that mimics insect hormones. It affects the larva's ability to develop properly, so it can't mature into an adult. It also affects their ability to reproduce, so any larvae that survive the treatment can't increase their numbers and contribute to an infestation. However, most treated larvae end up dying once they reach the pupal stage. One application provides total mosquito control for up to a month.

Where to Use Altosid Pro-G

This insect growth regulator controls mosquito larvae on properties with standing water. Female mosquitoes lay eggs in an inch of water, so birdbaths and puddles make the perfect spot. Adding Altosid Pro-G IGR to these areas will target the larvae and disrupt their life cycle. It's important to add the granules to water at the beginning of mosquito season and throughout the summer and early fall to control their population. Use this effective IGR in the following places and more:

  • Birdbaths
  • Gutters
  • Pool covers
  • Water gardens
  • Rain barrels

Target Pests

Altosid Pro-G larvicide targets the mosquitoes that spread viral diseases to humans, such as Zika and West Nile. It also affects the larvae that grow into adults and spread chikungunya. These species include Aedes and Psorophora, as well as Culex and Anopheles. Remember: This is a larvicide, not a mosquito insecticide. It's an insect growth regulator, so it won't affect mature adult mosquitoes. It will only affect the larvae in water and must be applied before the pupal stage to have the greatest results.

Benefits of Pro-G Mosquito Larvicide

This larvicide works quickly to disrupt the larva's life cycle. It kills it once it matures to the pupal stage and prevents any surviving adults from being able to reproduce. Combining it with a contact and residual insecticide greatly reduces the number of mosquitoes in an area. It also stops the spread of diseases by these blood-sucking insects. Other benefits include:

  • Can be used in ornamental ponds and other water sources
  • Provides control for up to 30 days
  • Mixes easily in water thanks to its granular formulation

Altosid Pro-G Prevents Mosquito Infestations

Altosid Pro-G insect growth regulator is the perfect addition to any mosquito pest management program. It's safe to use in animal drinking water when applied as directed and provides control for a month. It's ideal for use in residential birdbaths and ornamental ponds, as well as in commercial water gardens. When mosquitoes target pool covers and other standing water on the property, target the larvae before they mature with Altosid Pro-G IGR for fast and effective results.

Manufacturer Wellmark™
Primary Pest Mosquito
Utility  Growth Regulator
Active Ingredient 1,5 - (S) - Methoprene
Composition 1.5%, 98.5%
Container Size 2.5 lb jug
Case Amount 12x2.5 lb jugs
Application Amount See label for details.



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