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Frequently Asked Questions:

What kind of spray should I use to control weeds in my lawn and garden?    

That depends!   If you are wanting to kill broadleaf weeds in a lawn, you can use a 2,4 D based product or Trimec.  Since these are contact sprays, you have to essentially wet the entire leaf surface to kill a leaf.  Also, this type of chemistry can volatilize with the vapors damaging nearby flowers and garden plants.
  
However, if you want to control exactly what is killed as in spot spraying, edging, or around landscaping, Roundup™ (glyphosate) is a great choice.  It is by far the most common herbicide applied with the Blue Viper.  It is a non-selective spray, which means it kills most actively growing smaller plants.  Dormant or larger plants are less susceptible.  The Blue Viper is an exceptionally effective tool to apply Roundup™ because of the very fine droplet size that it delivers.  The chemistry is systemic which means it can be applied to a small portion of the plant and it will kill the entire plant over a period of one to two weeks.  If you are going to use a glyphosate product, we recommend the 41% glyphosate labeled products.  Ready-To-Use (RTU) mixes of Roundup™ are not recommended, as they are too dilute for the small amounts of volume applied with the Blue Viper.

If I’m going to spray Roundup™, how do I mix my spray?    

An effective mix rate is 1 ounce of Roundup™ (41% glyphosate), followed by 1 ounce of dye in the tank, and then top off the tank (remaining 14 ounces) with water.  At this rate, you will find that you can casually walk while spraying a narrow path and get good coverage.  

How do I know how much to spray?

If using Roundup™, let the Blue Viper dye be your guide to how much is applied.  Good coverage with this type of herbicide will appear as a light haze of blue on the surface being applied.   Because most people over-apply chemicals to the point of wetting the plant, the amount of Roundup™ used is often reduced when used with the Blue Viper dye.  
 
• Other chemicals may require you to wet the surface of the plant more thoroughly.
NOTE:  Always read and follow all label directions.

Why do you recommend the Blue Viper Disappearing Dye?

The Disappearing Dye is designed to save you money, by minimizing the amount of chemical used.  You can see how much you have sprayed, as well as where you have sprayed.  This helps ensure that you spray only the weeds.  The dye also minimizes the chance of stepping in the chemical and tracking it through your yard.   It is important to note that, after spraying onto your weeds, the dye will disappear in just a few hours.
 
HOW TO USE: Mix with herbicides to temporarily mark sprayed areas.
MIX RATE: 1 oz. Blue Viper Disappearing Dye with 16 oz. of water/ chemical mixture.

What all can I spray?

Most water based herbicides, fungicides, and pesticides that stay in solution will most likely work well with the Blue Viper.  
  
Caution:   Do not use solvent or oil based products as they may damage the pump.  Also, products that tend to settle out of solution will lead to plugging.  All such products can cause damage which is not warrantied.

Do I need to clean out the sprayer every day?

Taking time at the end of day to clean the sprayer is a good habit and very important if it is going to be a few days or longer before using again. This will also reduce the risk of corrosion and damage to sprayer equipment.   If the same product mixture is to be used the next day, flushing the sprayer system with water should be sufficient.  

How do I change from spraying weed killers to spraying insecticides?  (Or vice versa?)

When switching products, a more thorough cleaning is needed.   A double rinse is a minimum, but 2,4‐D, and Trimec  are products that can adhere to the walls of plastic tanks and increase the risk of contaminating the next tankful.   So in those cases, extra care needs to be taken before switching to another product.
Household ammonia is a good tank‐cleaning agent.   First rinse with water, then rinse with an ammonia solution, followed by one more rinse with plain water.
 
CAUTION!  Never mix chlorine bleach and ammonia, as it will produce a dangerous chlorine gas!  Always follow label directions.  Most herbicide labels contain information on sprayer clean‐out following application.  The label may have specific cleaning agent and cleaning procedure.  

How often will I have to change batteries?

Of course this varies by how much it is used, but most customers tell us that a set of batteries will last a season.   As a good practice, take the batteries out at the end of a season to prevent corrosion damage and start with fresh batteries at the beginning of the season.
Runs on 4-AA batteries not included