The key will always be diet. Fat burners will help the speed at which a program works, if the program is already working. Diet, training and cardio first. If you slack on these things, you won't see much benefit. BUT if you get your plan nailed first, it can take you to the next level. I would avoid T3 if you are not going to use steroids. T3 will burn muscle and fat but on a steroid, it will help to preserve muscle. Here is how I would run clen
About 12 wks at most :
Start with 40mcg ED, taken first thing in the AM. Then add 20mcg every 2 wks, going no higher than 120mcg per day total