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Heat is the most effective instant killer of bed bugs. Exposing them to temperatures above 131 degrees Fahrenheit for over an hour can eliminate them. Methods like steam cleaners and using a dryer on high heat are effective for this. Other options that can kill bed bugs on contact include EPA-approved pesticides, bleach, disinfectant sprays with alcohol, diatomaceous earth, and hydrogen peroxide. While freezing can work, it is not an instant solution, as it can take several days at 0 degrees Fahrenheit to be effective. Keep in mind that many DIY treatments won't reach bed bugs hidden in cracks or behind walls. For severe infestations or the most effective results, it is best to hire a professional exterminator for a professional heat or chemical treatment.

Yes, you should wash your sheets and clothes immediately after receiving a pest control service. If your pest pro sprayed chemicals inside your home, it’s important to remove any lingering residue from your washable items. Consult your pest control pro for a list of post-treatment steps to follow.

Rat poison that contains an anticoagulant like warfarin can cause bleeding, chills, confusion, extreme fatigue, headache, convulsions, lightheadedness, and seizures. Anticoagulants prevent your blood from forming clots, which can result in uncontrolled bleeding both internally and externally. Other types of rat poison that aren't anticoagulants attack your liver, kidneys, and digestive system. They can suppress your breathing and heart rate, causing low blood oxygen and poor circulation. Burning in your throat and gastric discomfort are common symptoms.

Squirrels hate not having access to secure shelter or food sources. Your best line of defense is to make your property less attractive by removing access to these things. There are chemical squirrel repellents, but these have mixed success. According to Pennsylvania State University, you can apply products containing the bittering agent denatonium saccharide to a squirrel's favorite fence, tree, or roof spots. However, you need to reapply repellents regularly, which aren’t scientifically proven effective.