Sometimes when cleaning wool or wool mix carpets a neutral ph product will not give the results desired,this is usualy due to very heavy soiling so to get the best cleaning results I use a higher ph cleaning product.
My view is that the carpets are in a bad condition and I will be improving them and that though not ideal I have very little choice.
It is important that the carpets are not left in a high ph state so my last step in the cleaning process is to use an acid rinse to return the carpets to a neutral ph.
If I can be of any help to you please contact me.
The areas I cover cleaning carpets are Haywards Heath/Burgess Hill/Uckfield/Heathfield/Lewes/Polegate/Bexhill and all surrounding areas