ALTOSID Briquets


ALTOSID Briquets

Product Description

ALTOSID® is a larvicide that disrupts the normal growth pattern of immature mosquitoes in water and prevents them from becoming breeding, biting adults. ALTOSID is an easy to use, long-term, cost-effective and environmentally responsible mosquito control larvicide.

Additional Information


When/Where to Use:

ALTOSID® 30-Day Briquets
Stop mosquitoes where they start.

Catch basins, ponds, lakes, roadside ditches and surface water receptacles are all locations where ongoing maintenance is necessary, but often impractical. A single application of Altosid® 30-Day Briquets provides the solution by ensuring consistent, slow release control for up to 30 days.

Get effective control with the (S)-methoprene IGR in Altosid® products – it works when consumed or just absorbed by mosquito larvae. Altosid® 30-Day Briquets can be hand applied by operators on foot or in moving vehicles, saving you time and money.

Altosid® 30-Day Briquets:

  • Slow release control for up to 30 days
  • The Active ingredient (S)-methoprene
  • Hand application by operators on foot or in moving vehicles


ALTOSID® XR-Briquets
Habitats that need the most control are often the most undesirable and difficult to treat. So you’ll be pleased to learn that a single application of ALTOSID XR-Briquets offers up to 150 days of control.

Like ALTOSID 30-Day Briquets, XR Briquets require no expensive application equipment, and can be used for pre-treatment before the wet season. That means you’re better able to treat hard-to-access or out-lying areas, and can eliminate the additional costs associated with travel and multiple re-treatments.

Altosid® XR Briquets are available in the standard cork shape and for easier application the slim ingot shape to fit through virtually any storm drain or sewer without the need for lifting the grate.

Altosid® XR-Briquets:

  • Slow release control for up to 150 days
  • Multiple shapes for easy applications
  • Extended shelf life
  • Easy-to-use


  • Kills all mosquito pest species.
  • Consistent results in all populations/densities.
  • No impact on food web.
  • Labor savings with extended residual.
  • Multiple formulations to meet application and economic requirements.
  • Pretreatment capabilities
  • Excellent canopy penetration


30 day 400/cs, XR 220/cs, Ingot XR 220/cs

Active Ingredient:


Mode of Action:

Unlike conventional pesticides, each Altosid® formulation contains (S)-methoprene, an insect growth regular (IGR) that stops mosquitoes from becoming breeding, biting adults. (S)-Methoprene is target-specific and will not affect fish, waterfowl, mammals or beneficial predatory insects. As a result, you can feel comfortable using Altosid® in your district’s most sensitive areas. And you’ll feel even better about the effective, long-term control you’ll get in return.

Best of all, the (S)-methoprene in Altosid® products has an excellent toxicity profile. So you get complete control without additional worries. Furthermore, residual larvicidal activity reduces adult populations and the need for adulticides.

Product Specs:

30 day briquets - 8.62% (S)-MethopreneXR briquets – 2.1% (S)-Methoprene