Even worse is getting the job, keeping it for a month or two, getting fired for not disclosing your record, and then having to either: explain why you were fired or why you have the gap in your work history, on your next job application.

I'd rather disclose on the job application than continually dread my secret being found out.

If it's a problem for the company or hiring staff, I wouldn't want to work there, because I probably wouldn't be happy there.