In Wyoming, direct contractors must provide the property owner with both a Preliminary Notice of Right to File Lien and a Notice of Intent to Lien in order to maintain lien rights. The Preliminary Notice of Right to File Lien must be provided required prior to receiving any payment from owner (including advances); and, the Notice of Intent to Lien is required to be sent at least 20 days prior to filing lien.
While the failure to provide the notices as required is fatal to a subsequent lien claim, that doesn't mean that the ability to recover payment is completely cut-off. A lawsuit for breach of contract, or potentially pursuant to other cases of action, may be a path to recovery if payment is not forthcoming. Additionally, alternate collection methods, such as use of in-house or an outsourced collections agency may be helpful.