Spotting Techniques & Stain Removal Flashcards
7 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Spotting Techniques & Stain Removal flashcards as text
When a stain has been treated but a slight shadow or ghost remains after drying, the technician should NEXT:
Answer: Re-treat with the appropriate spotter, allow dwell time, then extract and dry thoroughly
A residual shadow often means incomplete removal; a second targeted treatment with correct dwell time and thorough extraction frequently eliminates the remaining discoloration.
Chewing gum embedded in carpet pile is BEST removed by:
Answer: Freezing it with dry ice or aerosol freeze spray, then shattering it
Freezing gum makes it brittle and non-sticky so it can be shattered and picked out without pulling or damaging carpet fibers.
A rust stain on carpet is BEST treated with which type of chemical agent?
Answer: Acidic rust remover containing oxalic or phosphoric acid
Rust (iron oxide) is dissolved by chelating agents and acidic compounds like oxalic or phosphoric acid, which convert the iron into a soluble form that can be rinsed away.
What is a 'volatile dry solvent' and why is adequate ventilation required when using one?
Answer: A petroleum or chemical solvent that evaporates rapidly, releasing vapors that can be flammable or harmful if inhaled
Volatile dry solvents evaporate quickly and release chemical vapors that can be flammable and toxic; proper ventilation protects the technician and prevents fire hazards.
After completing spot treatment on a carpet, why is it important to groom the pile before drying?
Answer: It lifts and realigns the pile so fibers dry in an upright, uniform position and texture is restored
Grooming after treatment realigns crushed or matted pile fibers, ensuring even drying and restoring the carpet's appearance and texture.
A pet feces stain on carpet should be approached in what order?
Answer: Remove solid matter first, treat with enzyme spotter, allow dwell, then extract and rinse
Solids must be physically removed first to prevent spreading; enzyme spotters then digest the remaining organic matter, followed by extraction and rinsing.
Which precaution must be taken when using a reducing agent spotter such as sodium hydrosulfite on carpet?
Answer: It should not be mixed with oxidizing spotters and the area must be rinsed immediately after treatment
Mixing a reducing agent with an oxidizer causes a violent chemical reaction; thorough rinsing after use is essential to prevent fiber damage from residual chemicals.