Use sterilized pruners and remove any dead, damaged, or diseased fronds off the plant. Wear gloves to remove the sharp spines at the leaflets' base on the fronds. Prune away fronds that are at the base of the plant. It is not unusual that the plant will shed its lower leaves from time to time. To clean debris and dust off the leaves:
Place the palm in a shower or tub.
Fill a watering can with a shower spout with filtered, bottled, or water free of chlorine and fluoride.
Shower the leaves, so each one is clear of dust and dirt.
Let the water drain and replace your palm in the decorative container.