Yes sadly i am one of those people who is very allergic to the touch of blood worms and get very itchy. I still feed my fishes frozen blood worms and live blood worms but i wear gloves at all times when handling it. I use hikari frozen foods. I have found them to be the best for me.Be careful handling the blood worms. Some people are extremely allergic to them and are affected even by the frozen ones. The first few times you handle them, be aware of how you feel afterward. You don't want to be in big trouble before you notice it if you happen to be one of the people who react to them.