Home PestsBed Bugs

Does Cold Kill Bed Bugs?

Bed Bugs 6

Bed bugs are a common household pest that can cause a great deal of discomfort and stress. These tiny, blood-sucking insects can infest your home and become a persistent problem if not dealt with properly. There are various methods to eliminate bed bugs, ranging from professional extermination to DIY home remedies. One question that often arises is: Does cold kill bed bugs? Let’s delve into the details.


Yes, cold can kill bed bugs. However, for it to be effective, bed bugs need to be exposed to temperatures of 0°F or below for at least four days. This method may not be practical for larger infestations and most home freezers are not cold enough to achieve these conditions. Other methods, such as heat treatment, may be more effective for larger infestations.

Understanding Bed Bugs

Bed bugs are small, flat insects that feed on the blood of humans and animals while they sleep. They can survive in a wide range of temperatures and are notoriously hard to eliminate due to their quick reproduction rate and ability to hide in small cracks and crevices.

Bed Bugs and Cold Temperatures

Bed bugs can tolerate cold temperatures to a degree. They can remain active at temperatures as low as 46 degrees Fahrenheit, and can survive even colder conditions by lowering the freezing point of their bodily fluids. However, extreme cold (below 0°F) can kill bed bugs if maintained for several days. Bed bugs can also enter a hibernation state when temperatures are a few degrees above 0, allowing them to survive until the temperature rises again.

Cold Treatment for Bed Bugs

Freezing bed bugs can be an effective method for killing them, but it requires specific conditions. To kill bed bugs with cold, you need to expose them to 0°F or below for at least four days. Most home freezers are not cold enough to kill bed bugs, so you must leave the infested items in a sealed bag in the freezer at 0°F for three days. However, using cold temperatures to control an entire population of bed bugs is not practical.

The Effectiveness of Cold Treatment

While freezing can kill bed bugs, it is not always the most effective method. According to a study published in the Journal of Economic Entomology, bed bugs have a high cold tolerance, but they will eventually succumb to the cold after several days of exposure. The researchers discovered that a minimum exposure time of 80 hours at -16°C (3.2°F) is required to achieve 100% mortality for all life stages of bed bugs.

Pros and Cons of Using Cold to Kill Bed Bugs

Using cold temperatures to kill bed bugs has its advantages and disadvantages. On the plus side, it’s a non-toxic method, unlike chemical treatments. On the downside, it’s not always practical or effective, especially for larger infestations. It also requires special equipment and monitoring, and it’s time-consuming.

Cold Treatment vs Other Methods

While cold treatment can kill bed bugs, heat treatment is generally more effective. Temperatures of at least 120°F (48.8°C) sustained for a minimum of 60 minutes can effectively kill all stages of bed bug life cycles. Heat can penetrate into cracks and crevices where bed bugs hide, making it an ideal method for treating infestations that have spread throughout a home or building.

Safety Precautions When Using Cold to Kill Bed Bugs

When using cold to kill bed bugs, it’s crucial to take certain safety precautions. Ensure the freezer temperature is set to 0°F or lower, place infested items in sealed plastic bags before freezing, and leave the items in the freezer for at least four days. Be cautious when freezing delicate items, as they may be damaged by the freezing process.


In conclusion, while cold can kill bed bugs, it’s not always the most practical or effective method. Depending on the size and scope of the infestation, other methods such as heat treatment or professional extermination may be more suitable. Always consult with a professional pest control service to determine the best course of action for your specific situation.

Frequently Asked Questions

Can I use my home freezer to kill bed bugs?

Yes, you can use your home freezer to kill bed bugs. However, you need to ensure the temperature is set to 0°F or below and the infested items should be left in the freezer for at least four days. It’s important to note that not all home freezers can reach this temperature, and not all items can withstand freezing temperatures without getting damaged.

Is cold treatment for bed bugs safe for the environment?

Yes, cold treatment is generally considered safe for the environment as it is a non-toxic method. It doesn’t use any chemicals or pesticides that could potentially harm the environment or pose health risks to humans and pets.

What are some other non-chemical methods to kill bed bugs?

Besides cold treatment, heat treatment is another non-chemical method to kill bed bugs. This involves raising the temperature of the infested area to at least 120°F (48.8°C) for a minimum of 60 minutes. Vacuuming, steam cleaning, and using diatomaceous earth are other non-chemical options for bed bug control.

How do bed bugs enter a home?

Bed bugs can enter a home in various ways. They can hitch a ride on luggage, clothing, used furniture, or other items that are brought into the home. They can also move between adjoining apartments or rooms in hotels.

How can I prevent bed bug infestations?

To prevent bed bug infestations, avoid bringing used furniture into your home, inspect hotel rooms before settling in, and regularly check your home for signs of an infestation, such as shed skins, fecal spots, or the bugs themselves. Regular cleaning, including vacuuming your mattress and washing your bedding in hot water, can also help prevent infestations.

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