Altosid Pro-G Mosquito Larvicide

Mosquitoes are more than just a nuisance; they can transmit diseases such as West Nile virus and may spread heartworm disease to dogs and cats. Altosid Pro-G Mosquito Larvicide helps reduce mosquito populations by targeting mosquitoes during their immature aquatic stages before they become breeding, biting adults. Treating mosquito breeding sites around your property can significantly reduce future mosquito activity.

What is Altosid Pro-G Mosquito Larvicide and how does it work?

Altosid Pro-G Mosquito Larvicide is a granular mosquito larvicide that contains an insect growth regulator (IGR) called methoprene. It is applied directly to standing water where mosquitoes breed. Rather than killing adult mosquitoes, Altosid prevents mosquito larvae and pupae from developing into biting adult mosquitoes, helping break the mosquito life cycle before mosquitoes become a nuisance.

Where can Altosid Pro-G Mosquito Larvicide be applied?

Altosid Pro-G can be applied to virtually any temporary or permanent standing water site that supports mosquito breeding or where mosquitoes lay eggs, including:

• Bird baths
• Ornamental fountains
• Rain barrels
• Gutters
• Pool covers
• Horse troughs
• Flowerpots
• Water gardens
• Puddles
• Retention ponds
• Drainage ditches
• Catch basins
• Stormwater areas
• Tree holes
• Wastewater treatment areas
• Livestock runoff lagoons
• Marshes and swamps

It can also be used in agricultural settings such as irrigated cropland, pastures, vineyards, rice fields, orchards, and berry fields where mosquitoes breed.

Is Altosid Pro-G safe for ponds, fish, and wildlife?

Yes. According to the manufacturer, Altosid Pro-G Mosquito Larvicide can be used in bodies of water that contain fish. It is also suitable for use in many ornamental and recreational water features where mosquitoes breed. For small ponds, apply the granules around shallow edges where mosquito larvae are most likely to develop.

Always follow the product label for specific application instructions and rates.

Can Altosid Pro-G be used in bird baths and animal drinking water?

Yes. Altosid Pro-G is labeled for use in bird baths, horse troughs, ornamental fountains, rain barrels, and other animal drinking water receptacles where mosquitoes may breed. When used according to the product label, it helps prevent mosquito development without affecting the intended use of these water sources.

Does Altosid Pro-G kill mosquito eggs?

No, Altosid Pro-G does not typically kill mosquito eggs. Instead, it prevents mosquito larvae and pupae from successfully maturing into adult mosquitoes. If mosquitoes lay eggs in treated water, you may still see eggs or immature stages, but they will not develop into breeding, biting adults.

Why use a mosquito larvicide instead of an adult mosquito spray?

Mosquito larvicides target mosquitoes before they become flying, biting adults. By treating breeding sites with Altosid Pro-G, you can reduce future mosquito populations at the source. For best results, many homeowners combine larval control in standing water with adult mosquito treatments in landscaped areas where mosquitoes rest.

Does Altosid Pro-G kill adult mosquitoes?

No. Altosid Pro-G is designed to control mosquito larvae and prevent them from developing into adults. It does not kill existing adult mosquitoes and has no effect on mosquitoes that have already reached the adult stage before treatment.

Can Altosid Pro-G be applied before mosquitoes hatch?

Yes. Altosid Pro-G may be applied before flooding or before mosquito eggs hatch in areas that flood intermittently. In some situations, a single application can prevent adult mosquito emergence through several subsequent flooding events. Actual control duration depends on the frequency and duration of flooding.

How much Altosid Pro-G should I apply?

Apply Altosid Pro-G evenly over the surface of the water according to the size of the treatment area:

• 1 cup treats up to 2,400 sq. ft.
• 1/4 cup treats up to 600 sq. ft.
• 1 tablespoon treats up to 150 sq. ft.
• 1/2 tablespoon treats up to 75 sq. ft.
• 1 teaspoon treats up to 50 sq. ft.
• 1/2 teaspoon treats up to 25 sq. ft.
• 1/4 teaspoon treats up to 13 sq. ft.

For small containers such as flower pots, urns, old tires, and similar water-holding receptacles, use approximately 80 granules per gallon of water.

How much area does one container of Altosid Pro-G Mosquito Larvicide treat?

One 2.5 lb container of Altosid Pro-G Mosquito Larvicide can treat up to 5,445 square feet of water surface area when applied according to label directions.

How long does Altosid Pro-G last?

A single application of Altosid Pro-G releases effective levels of Methoprene for up to 30 days. To maintain season-long mosquito control, applications should be repeated every 30 days or as directed on the product label.

Should standing water be removed or treated with Altosid Pro-G Mosquito Larvicide?

The most effective mosquito prevention strategy is to eliminate standing water whenever possible. Emptying, draining, or discarding containers that collect water will help reduce mosquito breeding. When water cannot be removed, treating it with Altosid Pro-G provides long-lasting larval control.

Does moving water affect Altosid Pro-G performance?

Yes. Water flow, exchange, or frequent flushing can reduce the effectiveness of Altosid Pro-G by removing the active ingredient from the treatment area. Sites with moving water may require more frequent applications or higher application rates as directed by the product label.