Now give the rug a healthy sprinkle of.
Tiny black spots on carpet.
Try 1 tablespoon of ammonia mixed with 1 cup of water but not on wool or wool blend carpet.
If that doesn t work you can try one part chlorine bleach to five parts water but only on solution dyed carpets such as polypropylene.
If you get to one of them and sort of pull the carpet fibers back it looks like it starts at the very bottom of the carpet where it s woven into the backing and it s very very dark almost like.
Instead use mild detergent and water.
Next blot the area dry with a clean dry cloth or paper towel.
It is a multi eating parasite if you watch the tiny black dots for a long time one of them moved i saw his two legs it looks like a dirt spot but it s not it s a mold eating parasite so now i have to call my home owners insurance and an exterminator that is the answer i finally figured it out.
To rid your carpet of foul smells first blot any strongly affected spots with a damp cloth.