There are a few different things that can kill termites naturally. One option is to use boric acid, which is a powder that interferes with the termites' nervous system. Another option is to use diatomaceous earth, which is made up of fossilized diatoms (a type of algae) and kills the termites by drying them out. You can also use orange oil, which is made from the rinds of oranges and kills the termites by clogging their breathing tubes. Lastly, you can use nematodes, which are tiny parasitic worms that kill the termites by entering their bodies and eating them from the inside out.

There are a few different ways to kill termites naturally. One is by using boric acid, which you can buy at most hardware stores. Another way is to use nematodes, which are tiny worms that eat the termites. You can also use orange oil or vinegar to kill them. All of these methods are relatively safe and effective.