Shrine -- If you're looking at clen or other fat burners, just steer clear of T3. If you aren't messing around with AAS, there's no real reason to use it, anyway, IMO. There are SO many other smarter, safer ways to cut fat without having to worry about the potential problems, along with the potential to lose muscle.
I think someone is way better off with something like TTA, raspberry ketones and CLA for a good non-stim fat-burning attack. If you've taken a stim break, toss in the EC stack and boom, good to go. And then once you're down to the last little bit, toss in a topical (and if you really wanna use clen, liquid RC clen can be mixed in with them).