M870 Mosquito Fogger Mister Duster Backpack Sprayer - Powerful 51.7cc

In this review of the M870 Mosquito Fogger Mister Duster Backpack Sprayer, the bottom line is simple: it is best for homeowners and small commercial users who need a powerful, portable solution for garden and yard pest control. The single biggest reason to buy is the combination of a strong 51.7cc engine and a high tunnel volume that produces long-reaching mist, making it effective for treating bushes, hedgerows and small to medium yards. This review covers handling, output and practical strengths based strictly on the product's features.

Key Features

• Powerful engine: The 51.7cc engine delivers robust airflow so the unit can generate the quoted tunnel volume of 805 CFM for wide coverage.
• Long reach mist: Mist output can reach roughly 39 ft horizontally and 32 ft vertically, which helps treat tall vegetation and distant foliage without repeated passes.
• Versatile tank: The 4 gallon (16 liter) tank allows longer run times between refills, suitable for larger garden sessions or multi-plot work.
• Adjustable liquid control: Variable dosage control offers selectable output from 0.10 to 1.2 gallons per minute so the operator can match application rate to the task.
• Lightweight portability: At about 22 pounds with padded shoulder straps and integrated tank handles, the unit is easier to carry during extended use.
• Multi-purpose use: The fogger accepts both liquid solutions and insecticides, and it also disperses powders and granulars for flexible pest control options.

Who It's For

The M870 is aimed at homeowners with medium-sized yards, landscapers, and small agricultural users who need a reliable mist blower that is still portable. Its reach and four gallon tank make it a good fit for properties with trees, shrubs and perimeter treatments where a hand pump would be too slow.

It is less suitable for those needing ultra-precise indoor fogging or users who require an extremely lightweight, battery-powered machine. If you only need occasional spot treatment of a small balcony or indoor space, a smaller, lower-capacity device would be more appropriate.

Pros & Cons

Pros

• Strong 51.7cc engine and 805 CFM tunnel volume provide effective, long-range misting.
• Adjustable dosage and 4 gallon tank reduce refill frequency and allow controlled application rates.
• Lightweight for a motorized blower at about 22 pounds with padded straps and integrated handles for easier handling.
• Multi-mode capability for liquids, powders and granulars increases versatility across pest control tasks.

Cons

• As a powered gasoline unit, it produces noise and exhaust and requires fuel and maintenance, which may not suit all users.
• The size and capacity make it less ideal for very small indoor or balcony use where a compact fogger would suffice.

Specifications

Brand	Invatech Italia
Engine	51.7cc
Tunnel volume	805 CFM
Tank capacity	4 Gallon / 16 liters
Mist reach	39 ft horizontal, 32 ft vertical
Unit weight	About 22 pounds
Nozzle droplet size	Approximately 52-70 microns

Our Verdict

The M870 is a solid choice for users who need a high-output, portable fogger for yards, gardens and small commercial tasks; its strong 51.7cc engine, long reach and adjustable dosage make it cost-effective for repeated outdoor treatments. Buyers who accept gasoline operation and basic maintenance will find good value in its combination of power, capacity and versatility.

Frequently Asked Questions

Can it handle both liquid and powder products?
Yes. The unit is multi-purpose and can disperse liquids, powders and granulars as described.

How far does the mist travel?
The fogger can produce mist that reaches about 39 ft horizontally and 32 ft vertically, useful for treating taller or distant foliage.

Is it easy to carry during long use?
The unit weighs about 22 pounds and includes padded shoulder straps plus integrated handles to make transport and handling easier.