I don't know what to do anymore i am at my wits ends. I have 2 sons Trieden (8) and Kaleb (3). Well Trieden has been acting out latley and i'm so frustrated. I caught him last week with a lighter outside lighting sticks on fire.

I came unglued on him he knows better. Not only was he doing it but he was teaching Kaleb to do it as well

Well i wake up today from a phone call from my mom saying the boys are downstairs calling her on the phone. So i get up and they had been on the phone dialing her #.
Well Trieden then proceeds to tell me that
Kaleb Had gone out the front door to the car to get some gum OMG

.
Trieden has become such a decitful boy and he lies all the time. I know Trieden also went outside to the car and was using my keys
He loves to tease Kaleb, i mean he is down right evil to him he gets kicks off tormenting Kaleb
What do i do someone please help me with this. I am so frustrated i just don't know what to do
Trieden Knows better then to be doing this stuff, but i am deathly afraid Kaleb is going to start this and be worse and something may happen.
What should i do with him i am down to the last straw here.