Anal gland oil research is part of the company's projects in learning about high-powered attractants for their A24 self-resetting trap.
"We know a range of lures will be part of removing stoats from the whole of New Zealand," van Dam said.
"Scent glands are just one of the experiments our sophisticated R & D team is working on."
The thieves could get more than they bargained for: just a few drops of scent glands in their car or home would stink for weeks.
"We popped a gland in our lab a couple of years ago during research.
"We had fans running and windows open in the middle of a Wellington winter, and it still took weeks to go. Some staff chose to work from home for a couple of days."
The oil was so potent it was in the process of being moved off-site for storage.
The thieves' motivations weren't likely to be industrial espionage, he believed.
"We're normally just trying to attract stoats, rats or possums, but I guess there are other kinds of opportunist pests in Roseneath."