One tablespoon of classic Dawn liquid – the blue stuff One cup of hydrogen peroxide Dab onto stain with a clean cloth or sponge. Try it? According to WardrobeOxygen: This can remove red wine, blood, yellowed stains from sweat and deodorant, grass, even stains that have been laundered and are old. I have since used it on heavier duty fabrics with an old clean toothbrush, and have poured it directly on to stains to pretreat before washing.
We foster on a fairly regular basis which means accidents can and will happen. I've tried a lot of commercial products and homemade remedies in the past to remove the stains and odors which either weren't pet safe or they just didn't completely remove the odor. I don't remember where I came across this concoction but I've been using it for quite a while now because it works!