I have 3 children that are very active but this week I feel I'm losing control of them my 5 yr old tied to stab my 6 yr old my 4 yr old lies for them all the time, they have done their best to see how far they will go on the house its like a bomb had hit it every day. CAN U HELP

There is obviously a problem with discipline, and following through with it. That your children behave this way, does not indicate that it has been going on for just a week.

What happens the rest of the time, you control them? Keep putting fires out? Face the same problems, only to varrying degrees day by day?

Children are not born with limits to their behaviour. Everything is an open book, until they are taught what is acceptable and what is not. Talking, screaming and yelling by you only goes so far, but does nothing to solve the issues of children out of control. (I say the screaming and yelling because usually out of control children have out of control parenting going on).

Your five year old attempting to stab your six year old is nothing short of total loss of control by you. If this was one of the worst examples you have of their behaviour, I can only imagine what they do when they decide they only want to wreak havoc and break things, fight, and not kill each other.

You really need help here. Seek out parenting classes, counselling, contact any organization that could possibly help with how to discipline children properly. Buy some parenting books, go to the library if you can't afford the books. Join a mother's group, speak to your family doctor, research online. Your public health unit offers a wealth of information. Are the older two in pre-school or playschool? Think about putting them in, and speak to the teacher's about your concerns.

Getting yourself in the right place to discipline properly is going to take a lot of hard work, because there is much to be undone in my opinion.

It won't get any better unless you parent them with authority. Everything they do at this age is a result of how you have allowed them to dictate to you, how things are going to be.

By the way, where is the father?

I have try all sorts of things talking to um telling school grounding them taking all their toys away nothing is working having a time out step I watch super nanny all the time go online for imfor and no matter what I try their not bothered 1 little bit. When I tell them something I stick to it. Their dad live with us and he is the same me don't no what to do any more.

One thing is you have to be consistent.
When you keep trying different methods of discipline and don't make the punishment fit the crime then they get the message that you will give up on everything you try.

Try reading
Crazymakers by Carol Simontacchi
http://www.amazon.ca/Crazy-Makers-Carol-Simontacchi/sim/1585421049/2

And Brain Allergies by Philpott
Amazon.ca: : generic (http://www.amazon.ca/s/ref=nb_ss_gw?url=search-alias%3Daps&field-keywords=brain+allergies+by+PhilPott&x=9&y=14)