Hydrogen Peroxide is amazing when it comes removing blood stains. You will have to use a bit of elbow grease, and afterwards toss a clothing in to a washing machine.

Years ago I adopted a 7month old female dog from a friend. A month or two later she had her first period. With in 3 days, my bed covers looked liked a murder scene. A lot of blood stains, blood stains on carpet all over the house.

I bought reusable dog diapers and maxi pads for her.

But Hydrogen Peroxide removed ALL blood stains. It took several hours, a lot of work, and several microfiber pads. But I was able to remove all blood stains.