I know the question of "how do you remove blood?" has featured here many times and I have chipped in my advice to this. Today, I encountered the worst blood staining I have ever seen - probably best described as a trauma scene as the victim had lost a pint and a half. There were the "usual" sorts of spots we all see regularly and others that I would describe as large deep stains - dried and crusty. These I dealt with very successfully using protein spotter, extraction, rust remover for the residual mark and finished off with stain absorber to guard against wick back.
However, one large mark (10cm x 5cm) and several slightly smaller ones were very stobborn. I used the same approach as described with marginal success. I then applied enzyme and left to dwell whilst I was cleaning other rooms. Upon return I was able to improve the marks a little and with the help of several different types of rust remover managed further improvement. The end result was far better than what I started with but nowhere near acceptable. I applied stain absorber and said I would return tomorrow.
Any suggestions.