No, you do not have to post a vehicle before having it impounded, as long as the impound will comply with RCW 46.55.070. However, we do provide you with free ‘parking tickets’ that you may post on vehicles at your discretion, to warn those people who may be only 1st time offenders. These tickets are 2 parts, giving you a copy for your records, and affix to the windshield of the vehicle, warning the owner that their vehicle is subject to being towed. We have found that these are very effective with responsible tenants who may have simply made a mistake. Again, you do not have to do this, it is only at your discretion if you want to warn the tenant or not.