We are a very small plumbing company in Houston, TX. We have invoices as old as 12/31/07, which we have not pursued due to workload and limited resources. Now that things are slowing down, we are trying to collect on these old invoices. One in particular comes to mind - we have been trying to contact the homeowner by phone and by mail, but get no response. Is there a statute of limitations on invoices for tradesman work? I know it's too late to file a lien - can we take to small claims court? Are there other options for collection of which I'm not aware?