When it comes to ordinary or outlandish black bear behavior, the Tahoe Interagency Bear Team (TIBT) has seen it all.
Black bear deterrents that work in some parts of the country – air horns, motion-activated lighting or the loud banging of pots and pans – may be ineffective in the Tahoe Basin where bears have grown accustomed and desensitized to the sights and sounds of urban living, including car alarms, horns and music blaring from portable speakers.
Instead, the TBIT, a collective of bear experts representing federal and state agencies in the Tahoe area, offers up the best practices and proven methods to keep Tahoe bears wild and people and property safe.
Secure and Eliminate Attractants
Residents and visitors have the power to prevent negative outcomes for black bears by always following the BearWise Basics. This includes properly securing garbage and recycling, removing attractants like human and pet food, grills and smokers, and bird feeders. Securing and eliminating attractants is the most important and effective long-term solution to prevent human-bear conflicts and keep bears wild.
Electric Deterrents
The ultimate defense against black bear break-ins and property damage is electricity. A few small businesses have sprouted up in the Lake Tahoe Basin in recent years catering to the demand for better bear-proofing.
The “Cadillac” option for property owners is exposed electric fencing over doors, windows and other potential points of entry that provide a shock to any bear that comes into contact but does no lasting harm. Bears are smart and learn quickly to avoid such properties.
Electrifying a whole home with exposed wiring is a significant investment costing anywhere from $3,000 to $8,000. Property owners considering this deterrent need to weigh the costs against that of their home insurance deductible or the increasingly common experience of being dropped by their insurance carrier for submitting a property damage claim. Whole-home electric fencing may make the most sense for second homes or vacation rentals that go unoccupied for periods of time.
Electric doormats are another effective, less costly, non-lethal bear deterrent.
Costing about $500-$600, well-placed electric mats in front of doors or below windows provide bears with a negative experience that often keeps them from coming back. Unlike whole-home electric fencing that will shock anything or anyone who comes into contact with the exposed wires, anyone wearing shoes or most types of footwear are immune from the shock of the electric mats. All these devices can be shut off when people and pets are around.
The California Department of Fish and Wildlife (CDFW) and Nevada Department of Wildlife (NDOW) have a limited number of electric mats – what the agencies call “Unwelcome Mats” – to loan out to those experiencing human-bear conflicts in the Lake Tahoe Basin.
A properly installed, grounded and maintained electric fence will also keep bears out of chicken coops, gardens and backyard bee hives.
Secure That Crawl Space
Black bears typically enter dens between mid-November and December, particularly sows that will give birth to cubs in the winter. In the Tahoe Basin, outbuildings, porches, decks, crawl spaces, RVs and vacation homes often substitute for the natural dens wild bears will typically seek out. Bears will often look for easy entry routes, like vents and doors, that they can rip open to gain access. They can fit into very small openings. Generally, if a bear can get its head inside, the rest of the bear can follow. Once underneath a house, bears will often pull down insulation or scoop up available debris for bedding. This activity often causes damage to cable and electric wiring, piping that supplies heat to the home, and water and gas lines.
Allowing a bear to access space in your home is detrimental. This type of comfort level around humans and their properties can lead to future conflicts for you and your neighbors. It’s also imperative that female bears do not teach their offspring to seek out this sort of unnatural denning.
Securing your crawl space now is one way to prevent an unwanted guest this winter. Openings that lead under your house and other buildings should be boarded up with thick plywood with no gaps or prominent edges that bears can use for leverage to rip off the wood. See how to properly secure a crawl space in this video.
Dogs
Bears don’t like them, plain and simple, and properties with a canine resident or two can experience fewer bear visits than properties without a dog around. Always ensure there is not a bear in your backyard before letting your dog out and never purposely send your dog after a bear.
Unleashed dogs are often one of the greatest sources of negative human-bear interactions and can lead to injuries to yourself and your pet. See BearWise’s Safety Tips for Dog Owners for more information.
NDOW uses specially trained Karelian Bear Dogs (KBDs) as a non-lethal management tool to haze bears during releases and to search for bears during human-wildlife conflicts.
Paintballs
Shooting paintballs at a bear on your property will force it to move along quickly and is one of the most common and effective hazing tools used by wildlife professionals in the Tahoe Basin. Aim at the rear of the bear, not the head. Avoid red-colored paintballs as some might later think the bear is injured. Many paintball markers look like firearms to the general public, so limit their use to your immediate property and not the larger community.
Bear Spray
Learn how to use bear spray and carry it with you outdoors in case of an aggressive bear confrontation. Remember, bear spray is designed to protect yourself from an imminent physical encounter and is not to be used as a repellent or hazing method. Bear spray is equally effective on mountain lions and coyotes.
Scare the Bear
BearWise offers a number of tips on why and how to safely haze a bear in its Scare the Bear digital flier that can be downloaded and printed. For more information on coexisting with bears, visit BearWise.org