This powerful bird control tool is the first fogging unit to offer programmable components and a computerized touch screen. It works by dispensing a chemical known as methyl anthranilate--a grape extract proven to be effective in repelling pest birds. The extract irritates birds’ trigeminal nerve and mucous membranes through entry in the eyes, nose or mouth. Birds find the sensation very annoying and will seek the nearest exit the minute they get a healthy whiff of the chemical. There’s plenty of flexibility in how the system dispenses the fogging chemical. For example, a control unit lets you attach up to 64 fogging “drop” units, and each unit can be controlled individually. An adjustable nozzle system lets you direct the chemical spray to areas where pest birds tend to flock and roost. A unique nozzle design delivers a 5-micron particle size spray, which leaves no chemical residue. What’s more, each drop station covers approximately 6,000 to 8,000 square feet. You can also control the dispensing times, so that the spray units will begin dispensing fog all at once or at alternating intervals. A convenient control panel monitors liquid levels, and notifies you when to refills are necessary. Another effective pest bird deterrent for use in warehouses is No-Knot Bird netting. This low-profile netting creates a barrier that physically excludes pigeons, sparrows, gulls, starlings and crows. The netting is available in two mesh sizes to deter various size pest birds. For example, there’s a 2-inch mesh for pigeons and crows and 3/4-inch mesh for sparrows and smaller birds. No-Knot Bird Netting comes with a 10-year guarantee. It's fabricated of flame resistant, multi-strand polypropylene fiber and is highly resistant to many chemicals. It’s also ISO 1806 Protocol Mesh tested, and it won't rot, absorb water, or mildew. Another advantage of No-Knot Netting is that it is very light and easy to handle, yet it has a break strength of 50 pounds. Before using any bird deterrents, be sure to remove bird droppings, feathers and nesting materials. (Birds are attracted to this debris and will regard the venue as “friendly.”) Use commercial disinfecting cleaning agents to prevent exposure to any of the 60 known airborne diseases caused by birds. You should also use eye and respiratory protection if the area is heavily contaminated with bird droppings.