Bleach kills. It disinfects by killing bacteria, viruses, and other pathogens. Bleach (sodium hypochlorite) is a handy gardener's companion, as it is often recommended for disinfecting garden tools, ...
A sad fact of life is that sometimes a tree must be cut down. Some trees are beset by invasive insects or disease, others may be mangled by storms and some die from environmental stress or old age.