I'd advise against thawing the mouse out in water,I been told by quiet a few friends that depletes the nutrients..so what I do is,thaw it out at room temperature and then place the heat lamp over it for 5-10 mins tell it's fully thAwed and warm,I then open the package/ziplock bag it's in and place it on top the screen so Kocur can smell it,once he smells it,tongue is going and he is out and ready to feed..