Bullying is a serious behavior and most schools now take serious action against it. These kids will certainly not stop at termites. You need to tell the administrators of your school what's happening before it gets worse.

Repellent may not work against the bullies.

It may be too late and they have already penetrated your defenses. I would remain in the cellar playing an MMO and wait till the all clear.

Bullies are now illegal.so complain

That is the very good signal in your life.

Bullies from my school collected a jar of termites and poured it on my home without my mother noticing. I told her but she still refuses to believe me, should I use but repellent to get them away?