Recently i have been restoring old family photos that are forty to 100 years old.
Bright yellow spots on carpet.
Tackle wool carpet or wool blend with 1 tbs.
Then bursh it into the carpet.
I am guessing that this is.
This is nothing to worry about.
Those with much peroxide are bright yellow and exhibit an orange halo which moves outward as the bleaching action.
Acids pink or orange spots on carpets are caused by as little as 1 hydrochloric acid in solution.
The majority of the time this is the cause of the brown or yellow spots or rings that develop on your carpet after you clean.
Place it in a spray bottle or apply it directly to the stain.
You simply want to get enough on so that it is wet but not soaked.
Put on your gloves and work the solution in with your fingers.
However there may be some other variables at play too.
Do not soak the carpet.
Abundunt lactococci and lactobacilli were predominantly isolated from those spots.
Or if it really is yellow 2 apply an acid side product like fab set at 4 to 6 ounces per gallon or citric acid powder at 10 to 12 ounces per.
Green or blue stains may indicate sunlight combined with a catalyst.
Chlorine usually causes yellow spots but will turn some red dyes to green.
Of mild dish soap to 1 cup of water.
Yellow spots occurred on the surface of sliced ham which was made without sodium nitrite and stored at 4 c for 2 to 3 weeks.
In general red spots on tan or beige carpet may suggest strong acids.
Spots caused by benzoyl peroxide are yellow to orange in color on most carpet pinkish on blue carpet.
Yellow stains indicate reactions caused by strong oxi dizers or bleaches.
Stomach acid is 10 stomach acid so vomit must be cleaned up promptly and neutralized with a mild alkali such as a detergent solution and rinsed or there will be permanent colored spots.
I am a basic user of photoshop.