Review on Sensitive Boiled Changing Indicator Yellow by Tanya Hughes

I bought these to replace an old one I bought from Bed Bath and Beyond years ago. We've used it so much that after many years of faithful service, it started cracking and had to be retired. The one we had was different from the new ones we bought here. We bought them because we thought they were cute. Lesson learned. When we finally got a chance to use them, we found that they change color, but not exactly at all. When he said it had become "hard boiled" we were dismayed to find that when we broke it open it was still very runny inside. We thought this might be one since we had two so we used the other. We were so surprised that we got the same results. I'm more of an optimist, so I gave everyone a few more chances, but the result hasn't changed. DO NOT BUY! They may be cute as a decoration, but they don't work as advertised!