Bed bugs can be a persistent problem, but there are several ways to kill them permanently. Here are some effective methods to get rid of bed bugs:

1. Heat or cold: Temperature is an effective way to get rid of bed bugs in a mattress or other important area. You can wash affected bedding or clothing in very hot water for 30 minutes and then dry them in your dryer on the highest possible heat setting for at least 30 minutes. Alternatively, you can put affected items in a freezer that is at least 0 degrees Fahrenheit and leave them there for four days to make sure all bed bugs are dead.

2. Steam: Use a steamer on mattresses, couches, and other places where bed bugs hide. The high temperature of the steam can kill bed bugs without an exterminator.

3. Insecticides: Pyrethrins and pyrethroids are two common insecticides used to kill bed bugs. They are fast-acting and provide residual protection. However, some bed bugs are resistant to these chemicals, so you may need to use an alternate insecticide, such as pyrroles.

4. Desiccants: Desiccants work by destroying the waxy, protective outer coating on a bed bug. Once this coating is destroyed, the bed bugs will slowly dehydrate and die. Desiccants are a valuable tool in bed bug control, and they dont disturb normal bed bug activities. Because desiccants work through a physical mode of action, the bed bugs cannot become resistant to desiccants as they can to pesticides with other modes of action.

5. Bed bug-proof covers: Purchase bed bug-proof covers to place around your mattress and box spring. When zipped all the way up, these covers will prevent bed bugs from entering and will kill bed bugs trapped inside. They also form a protective barrier that prevents the bed bugs from biting you while you sleep.

6. Alcohol: An effective DIY solution is to apply diluted rubbing alcohol. Alcohol decreases bed bugs permanently. Alcohol also evaporates fast, making it a good option for killing bed bugs instantly.

7. Tea tree oil: Tea tree oil is an effective natural remedy to kill bed bugs instantly. You can spray the tea tree oil on furniture joints, headboards, cracks, and corners. All you need to do is to make a diluted solution by putting 20 drops of tea tree oil in a water spray bottle and shaking before using.

Its important to note that bed bugs reproduce quickly, so its essential to be persistent in your efforts to get rid of them. If you have a severe infestation, its best to contact pest control experts to eradicate bed bug infestation for good.