How do I get yellow stains out of my laundry?

does anyone know how to get black stains from a laundry roller presser out of white pillowcases?

• i think it's excess wax from the hot rollers in the machine. it leaves the occasional black spot or streak hat won't come out with tide and bleach. the hotel i work at is losing money from replacing a lot of pillowcases, does anyone know what can clean these stains?

• Answer:

  paroxide should do it. If not there is a cleaner called "spot" spray can we bought from department store. Has clenaing inst. and works. Took year old blood stain from my car seat. Cap was orange and is the same cleaner used by dry cleaners.