Older white models can become yellowed with age. What can be done to whiten them up again?
To remove yellow from white models, wash the model in a lemon-based dish detergent. Mix 1 cup bleach with 4 gallons of hot water and immerse the model for up to one hour depending on the amount of yellow to be whitened. To spot clean models, use a stronger solution of 2 cups bleach to 4 gallons water. CAUTION: Wear rubber gloves and avoid breathing fumes.
