Unusual polygraph request!

Kenmore WA:
A contractor received a complaint today about a subcontractor he was using.
The client (homeowner) said that the night before, he (client) had opened a whiskey bottle, drank a very small amount, and closed the bottle. Now the next day, the bottle was half empty, and since the subcontractor had been working in that room-- the client said the subcontractor must have consumed the whiskey.
Examination details to follow, if it happens . . .