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Los Angeles Rat Exterminators

Westside L.A. | San Fernando Valley | South Bay | Pasadena

California Pest Control License #PR6427
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40+ Years Rat Proofing Structures


5-Year warranty on rat control and rodent control services

5-Year Warranty

How it Works!

  • Free Onstie Inspection

  • Rodent Proof the Structure

  • Quickly Trap & Remove All Rodents

  • Clean Up Rodent Contamination

  • Control Rat Populations Outside

  • We Warranty Our Work

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Pasadena Rat Control & Rat Exterminator

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California Oakworm in Coastal California

Oakworm, Pest Control

It can be extremely unsettling to see your healthy live oak trees suddenly stripped of all their leaves. When this happens, the culprit is often the California oakworm. Because the oakworm is a generally beneficial native species, it can be hard to tell when you need to treat for it and when it is best to leave them alone. Learning the difference between a normal year and a dangerous infestation can help.

What is the California oakworm?

The California oakworm is the larva of a native moth. As a caterpillar, it grows to about three centimeters in length. It has a head that ranges from red to dark brown and a pair of yellow stripes along its back. The adult moths, known as oak moths, can often be seen at dusk and are brown or gray in color. They have a body length of 1.25 centimeters.

Oakworm eggs are laid on the underside of oak leaves. They are small, round white eggs that take on a pink or brown hue before they hatch. The young caterpillars eat tissue from the bottoms of the leaves when young, but will skeletonize leaves as they grow large enough to digest the heavier material.

The oakworm is considered a valuable part of both wild and urban landscapes in northern California. It provides food for a wide array of birds and insects. Due to this, it is important to address the best way to protect your trees while also protecting the surrounding environment.

Outbreaks of oakworm can be unpredictable. In some areas, you will find a number of the worms reliably each year. In others, you may have a heavy outbreak one year, but then not see any at all for several years.

Do you need pest control for California oakworm?

Seeing all of the leaves stripped from your tree can make you feel that the tree is in trouble. However, that is not always the case. A healthy live oak tree can typically survive defoliation. However, a tree that is not healthy may suffer additional damage due to the stress of a caterpillar attack. This can result in lost limbs or increased susceptibility to disease.

It is also necessary to get a proper diagnosis. Other tree issues, such as root rot, can lead to defoliation that resembles that caused by oakworms.

In many cases, it is fine to allow caterpillars to continue to feed without intervention. However, the caterpillars can become troublesome when they congregate in large numbers on outdoor furniture. Sometimes people will have trees treated for aesthetic reasons, as well. Pest control efforts can also be applied to specific trees. Systemic injection, for instance, can protect an individual tree from caterpillars for an entire year without a need for retreatment. This way, you can treat important trees that provide shade in your favorite outdoor areas while leaving those further from your home alone.

Are California oakworms defoliating your trees? We can help you determine the best way to keep this pest in check. Call American Rat Control today for a consultation.

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Need Someone To Clean Up After Rats or Bugs?

When we have determined that your house is completely rat proofed and all rodents have been successfully removed, we recommend cleaning & sanitizing the attic space, during the time rodents were inside your attic space they were contaminating the insulation with rodent feces and bacteria laden rat urine.

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Our professional rat exterminators will locate all rat entry points, seal up all holes, then quickly trap and remove all rats from your home or business.  We will not stop until all rats have been removed!

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