My4Sons M4 Agitator
The M4 with a built-in agitator, for anyone spraying powders or mixes that settle in the tank.
Amazon $299.99$299.99
The My4Sons M4 Agitator rates 3.7 among 4 gallons and up battery backpack sprayers; the Invatech Italia 915 rates 3.0 among mist blowers ones. The My4Sons M4 Agitator costs $102.01 less ($299.99 vs $402).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Invatech Italia 915
#3 in Mist blowersFull review
A high-output gas mist blower with a 4-gallon tank, for mosquito control and spraying tall vegetation.
Amazon $402$402
Scores side by side
These two sit in different type classes (4 gallons and up and mist blowers), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | My4Sons M4 Agitator | Invatech Italia 915 |
|---|---|---|
| Overall rating | 3.7/5 | 3.0/5 |
| Value 25% | 30 $75 per gallon of tank ($299.99, 4 gal) | 11 $100.50 per gallon of tank ($402, 4 gal) |
| Tank size 10% | 67 4 gal tank | 67 4 gal tank |
| Spray power 20% | 71 up to 80 PSI | 63 39 ft horizontal reach |
| Runtime or airflow 20% | 100 50 tanks per charge (200 gal) | 83 900 CFM airflow |
| Features 15% | 90 battery and charger included, adjustable pressure, 4 or more nozzles, metal wand, agitator | 35 adjustable dosage |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| My4Sons M4 Agitator | Invatech Italia 915 | |
|---|---|---|
| Spraying | ||
| Tank | 4 gal | 4 gal |
| Max pressure | 80 PSI | - |
| Max flow | - | 1.2 GPM |
| Horizontal reach | - | 39 ft |
| Airflow | - | 900 CFM |
| Nozzles included | 9 | - |
| Wand length | 48 in | - |
| Hose length | 60 in | - |
| Power | ||
| Battery | 12 V 8 Ah, included | Gas engine |
| Runtime per charge | 6 hours | - |
| Gallons per charge | 200 gal | - |
| Tanks per charge | 50 | - |
| Engine | - | 63.3 cc |
| Features | ||
| Adjustable pressure | Yes | - |
| Metal wand | Yes | - |
| Agitator | Yes | - |
| Gauge or control panel | No | - |
| Adjustable dosage | - | Yes |
| Build | ||
| Weight | - | 22 lb |