Dive summary:

• The Bings Creek Solid Waste Transfer Station in British Columbia, Canada, is trying something new and using a simple, but effective gate to keep out irritating seagulls.
• The decision came after numerous attempts that proved to be minimally effective or cost too much to maintain such as scarecrows, air horns and professional falconers.
• Now, the truck drivers activate remote control gates when entering or leaving the buildings, ridding the facility of almost all of the seagulls.

From the article:

Facility supervisor Brett Chester explained that the bird buffet began years ago with a single gull, "who told one friend and so on, ultimately culminating in several hundred seagulls arriving every year starting in October and staying until April."

It became even more of a problem when the facility started accepting organic waste. The gulls' presence and associated messes were not welcomed by staff or by visitors.

"I had several complaints from my customers and commercial operators when these guys loomed overhead," Chester explained. ...