To record a mechanic’s lien, the lien claimant must have sent out a preliminary twenty day notice (“20 day notice”). Many people have questioned whether 20 day notices are still cost justifiable. Also, people have questioned whether 20 day notices are effective for landscape contractors when they are performing maintenance work. Finally, others are unsure about whether a 20 day notice will cause tension with the owner or general contractor. This article will address these questions.