Upon hearing the word ‘pest,’ most people conjure up a similar image: insects swarming in the walls, several mice scurrying away under the kitchen sink or something equally gross, but rarely causing bodily harm.

Unfortunately, while some pests are content with causing property damage or being a general nuisance, some pests can be life-threatening.

Here are a list of the most dangerous insects and pests in California.  If you happen to spot one of these, your situation has become severe.


Mosquitos may seem harmless at first, as their bites can be merely an itchy annoyance. However, mosquitos are well known for carrying potentially deadly viruses such as the West Nile and the Zika virus, and this makes them a very dangerous insect.

Fortunately, there are effective measures you can take to repel mosquitos. Over the counter bug repellents can prove quite effective. Make sure to remove any standing water on your property.

Black Widow

Arguably the most infamous of all spiders, the black widow is easily identifiable with its pitch black skin and bright red hourglass marking. The black widow’s venom is filled with neurotoxins that can cause muscle cramping, raised blood pressure, and can even disrupt your breathing.

If you have bitten by a black widow, seek medical attention immediately.

Bark Scorpion

The bark scorpion easily distinguishes itself as a threat on sight with the way it spreads its pincers and raises its tail. If your door has just 1/16th of an inch clearance, these pesky scorpions can squeeze their way into your home.

Their sting can quickly turn your life into a nightmare. Common symptoms include vomiting, numbness, and severe pain. Some can also experience the feeling of repeated electrocution.

Contact Us

If your home is besieged with dangerous insects, don’t hesitate! Contact Preventive Pest Control today and see for yourself why we have become one of the most trusted names in pest control!