Usage Guide

How to Apply Mauget Injections

Mauget is “the simplest and most effective micro-injection/micro-infushion system ever developed for trees.”

With Mauget, there is no need to purchase expensive, complex tree-injection equipment that can require costly repairs and maintenance to treat trees. A cordless, electric drill is all that’s needed in most cases.

Mauget products have been developed strictly for trees, although they may be used on other plants as well. For over 55 years, Mauget is the world’s leader and pioneer in tree-injection technology.

Mauget is by choice, the preferred tree-injection system of professionals, governments and institutions. Mauget is truly the “RIGHT WAY TO TREAT A TREE.”

Take a moment to watch our general tutorial in either English or en Español:

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  1. Measure the tree at breast height (DBH) in inches (diameter).
  2. Divide that number by 2 (if measuring circumference, divide by 6), that will establish the number of capsules to use on the tree.
  3. Drill 11/64″ holes approximately 6″ apart at the base (root butress) of the tree, avoiding root valleys.
  4. Compress capsules by hand or use the Mauget compression tool.
  5. Insert the feeder tube onto the capsule (gunsight upward).
  6. Place capsule and feeder tube into holes drilled into that tree.
  7. Tap the compressed capsule and feeder tube on the rear of capsule seating the feeder tube into the tree while puncturing the capsules membrane/feeder tube interface at the same time.
  8. Remove capsule and feeder tube from the tree when empty.
  9. Dispose of the emptied capsules as outlined below.


(A) Mauget compressible micro-injector with insert hole.
(B) Feeder tube with flanged gunsight and opposite tapered beveled end.

(A) Portable electric drill
(B) 11/64 in. (0.4 cm) drill bit
(C) Optional soft headed mallet or hammer
(D) Tape measure
(E) Insertion tool (optional)

Measure the tree at chest height in inches. If measuring the circumference, divide this number by six (6) to determine the number of micro-injectors needed. If measuring the diameter at breast height (DBH), divide this number by two (2) to determine the number of micro-injectors capsules needed. If the number of micro-injectors results in a fraction, round down to the lower whole number.

The following dosage, per capsule, depends on tree diameter:

  1. 2mL capsules – 2 to 10 inches DBH
  2. 3mL capsules – 10 to 36 inches DBH
  3. 4mL capsules – 36 inches DBH and above.
  4. 6mL capsules – narrow-leaved evergreen trees 24“ DBH and above.

For heavier infestation and/or more persistent insects, use 4 mL capsules on all tree sizes. For narrow-leaved evergreen trees such as pine, spruce, or hemlock > 24“ DBH, use the 6mL capsules at 4-inch circumference spacing (DBH divided by 1.3). Trees in advanced stages of insect infestation may not respond to treatment. The health, species of the tree and the environmental conditions will determine the rate of uptake. For palms and other monocotyledons, when using multiple injection sites, alternate drilling depth to capture scattered vascular bundles, taking care that the depth of any single site is less than 1/3 the diameter of the tree. If using a single injection site, one feeder tube can be used to administer the contents of all capsules. Injection sites may be covered with Lac Balsam or similar for aesthetic purposes.

Apply the appropriate amount of pressure on the top of the micro-injector capsule in order to compress.

Drill the hole deep enough to allow the vascular system to transport materials throughout the tree. Make injection holes at least ½ to ¾ inch into healthy xylem (white wood) up to a depth of 2 inches from the outer trunk surface depending upon the tree species and outer bark thickness. For conifer species with high resin pressure during the growing season, place injection sites higher on the trunk (36 – 48”) and to a depth of up to 2 inches where tree diameter allows.

Several methods of combining the micro-injector capsule with the feeder tube are acceptable including placing by hand, the feeder tube’s flange end, with the flange notch upward, into the micro-injector capsule insert hole of a compressed upright capsule. Push the flange end of the feeder tube flush with the membrane located at the inner end of the insert hole.

Firmly seat the beveled, dispensing end of the feeder tube, with the attached upright micro-injector capsule, into the predrilled tree injection hole. Tap the rear side, opposite the insert hole of the micro-injector capsule either with an optional mallet, hammer or push forward with the palm of your hand. This action will simultaneously seat the feeder tube in the injection hole while breaking the micro-injector capsule membrane for releasing the capsule contents into the feeder tube and into the tree. Another method is to place the feeder tube in the predrilled hole of the tree using the optional insertion tool. Then place the compressed micro-injector capsule onto the feeder tube in place.

Uptake in the tree usually occurs within several minutes. Micro-injector capsules may be temporarily rotated in place to see if any liquid is left. When empty, turn the capsules upside down for one minute before removal. Applicators must remove micro-injectors promptly after treatment. Empty micro-injector capsules must not be left on the tree. The health and species of the tree, and local environmental conditions will determine the rate of uptake. If the capsule does not completely empty within a few hours, invert and carefully remove the micro-injector capsule and enclose it in a heavy duty plastic bag for disposal in accordance with state and local regulations.

For established trees with thin bark (less than 3/8 in. thickness), use a 7/64 in. drill bit to produce a micro-injection site for a mini-micro feeder tube. The mini-micro insertion tool may be used.

Because the 7/64 in. mini-micro injection site is so small, insert the mini-micro insertion tool pin into and through the mini-micro feeder tube and place the combination into the injection site. The insertion pin prevents plugging of the feeder tube and provides a clear pathway to the cambium tissue. Be sure to place the feeder tube with the flange notch up. The insertion tool is removed from the mini-micro feeder tube and the micro-injector capsule is secured to the feeder tube by sliding the inlet hold over the flange end of the tube. The system is activated by applying a force to the micro-injector capsule as previously described in step 8.