In the UK check your local asian food stores, some asians use borax when making noodles, it appears that the product for the eyes you purchased from amazon is boric acid not the salt Sodium borate decahydrate which is basic not acidic
again as is mentioned on the first page of this topic dont take boric acid
My daughter is a student and the house she shares is damp and full of fungus on the walls. Her room is the worst. When I went to pick her up for the Christmas holidays I took a plastic spray bottle of Borax and water (just put enough Borax in so that no more will dissolve). I sprayed the walls with it when I arrived and then wiped all the fungus off. After helping her pack I sprayed the walls again and just left them to dry. This was a last ditch attempt to make things better because the landlord would not do anything.
When I took her back after Christmas I didn't know what we would find but imagine my delight when we walked into her room to find not a trace of mould.
Thanks to all on this website who have written about Borax and how it kills fungus.
I hope this helps others in the same situation.
By the way, I live in the UK and it is impossible to buy Borax in any shop (even Boots). They are now selling something called 'Borax substitute' and no-one will give me a straight answer as to why they won't sell Borax. One assistant in Boots said that it was because old people used to put it in their eyes. Anyway, I eventually ordered a tiny amount from Amazon and to be honest you don't need a huge amount. Though one chemical company said they would sell it to my by the ton at a very good price.