I can probably help you a little with this, as I have had an incredible success with my son, Dylan, with behavior mod, rewards, charts, etc. It actually worked well for all my kids, but was miraculous with him because he is so complex (Bipolar/ADHD/Autistic) neurologically, and now I really have no issues with him at all behaviorally (with the exception of the once in a while thing).
I kinda took the charts/stickers/prizes thing and rolled with it, converting it to fitting our own specific needs and what I wanted my kids to do. We not only put chores, homework, hygiene stuff on here, but also certain behaviors I was targeting (i.e. No putting hands on others for 2 hours).
So, basically, we started small, picking only one or two things to target. We went to the Dollar Store, picked out construction paper, markers, stickers, rewards - I let the boys pick all of that out. They'd fill the cart with toys and such, I would put everything in a basket at home, on top of the fridge, and use them.
As I said, we'd pick one or two things. For instance, using my son Dylan, I'd say okay - this week we're going to do all homework (one thing) and shower nightly. I would make the chart with the paper and markers, and make blocks for every night of the week. For each task done, he'd get a sticker. If the task wasn't done, he just didn't get the sticker. Ok, so maybe he didn't care, but you know, neither did I. We're working on a goal. You make the goal, you get the reward, you don't - you don't. I DID NOT argue and fight or get upset or angry.
So, say 2 things we're working on, 7 days in the week, that's 14 stickers you should get. You get 12, you get whatever out of the basket ( you can't ever expect perfection here, and need to make the goal reasonable).
You are going to have to start small and build from that. It took me 3 years to be where we are to remove all the charts completely. Alot of people do not like them because they feel you shouldn't be rewarding a child for behaviors, however, if you remember this is a step process, with the eventual weaning OFF of the charts, to teach the child make good choices = good things happen, it can work.
Now my son does all homework, shower, chores, etc with NO charts, and he gets no rewards. Over time I switched from the charts to just taking privelages, and he knows now what he loses for inappropriate behaviors or refusal to do a task.
It's not easy at all. I've had to say what I mean, mean what I say, stick to my guns, and ignore alot of negative behaviors from him (i.e. throwing a tantrum when he didn't get the sticker), but now I can say it's all been very worth it.
He got in trouble at school yesterday. Threw a tantrum. You know, that boy knew the 2nd I showed up in the school he was done for. He knew he was in trouble. He came home last night, sat down at the kitchen table, did THREE HOURS of homework/classwork he missed, and got nothing but supper. I had NO problems with him, because he knows now.
If I can help you any more with this, feel free to PM me. Don't want to write a novel LOL!