Srila Prabhupada has stated that grihastha devotees are generally engaged in material activities and therefore they should take to Deity worship. Grihastha devotees are advised to adopt Deity worship according to the suitable arrangements and directions given by the spiritual master. The special purpose of Deity worship is to keep oneself always pure and clean. Grihastha devotees should be actual examples of cleanliness.
[ Srimad Bhagvatam Purport 7.5.24 ]