Ahh yes, I must have misread. I thought the issue was that you couldn't get another heat mat to put on a tub. And no, bites aren't all that painful. I've been bitten many times over by my girl lol. The trick for me was moving smoothly and at a moderate pace when reaching in for her. The gloves helped me stop the hesitant and jerky movements, which seemed to put her on edge (understandably so). Best of luck when taming her down!!