Not sure what you mean by "without an audited track record". Even if they have "an audited track record", no bots can give you guaranteed profit. If that was the case, then everyone would be using that bots with audited record you are talking about, right?
It is basic common sense. Don't use bots that aren't open source. Even if its open source, don't use it if you don't know how to read the code or at least understand what is happening. Don't use any bots where you won't have control of your own money.