Dust
Even in a display case, the figurines will probably pick up dust over time. Because of the delicate recesses and finely formed features, avoid using dust cloths or anything that might snag and break small pieces. Several different size and shaped paintbrushes work best. Use small brushes made for painting on canvas with fine bristles. You can also use a compressed air can, such as those used to clean electronics, or a hair dryer on cool setting.
Dirt and Grime
Smudges and accumulated dirt are harder to remove safely, but it is possible to clean them off without damaging the piece. First, try rinsing the figurine under warm running water and gently rubbing the smudge with your finger. If that doesn't work, mix a bowl of warm tap water and mild dish soap. Dip the figurine briefly in the solution and use a soft cloth to clean it. Tape the hole on the bottom of figurine to avoid too much water being absorbed by the porous ceramic. Smoke and cooking grease presents special problems for cleaning the pieces. Precious Moments figurines are most often pale in color and can become discolored easily. Try repeated dipping and cleaning in the water and soap solution. Dry the figuring lightly on a towel after cleaning it in water.
Things to Avoid
Precious Moment figurines are made from porcelain, which is more delicate than china. Never put the pieces in a dishwasher or use harsh abrasive cleaners. Do not use bleach on the figurines. Don't let the figuring soak in liquids or it could damage the structure by absorbing water.