Took the day off work today to 'clean round the edges' do all the deep cleaning stuff I never get round to. Anyway I've got a cream carpet on the stairs & upstairs & there are various mysterious stains.
I tried vanish at the time & even borrowed a mini carpet cleaner thing. the stair treads became awful over time I think.
Anyway, spray bottle 1/2 white vinegar 1/2 water. spray on stain
Place damp flannel over stain & iron for about 30 seconds.
Honestly
I wish I had before & after pictures.
Apologies if this has been covered before, I found it on YouTube 