Call us now to help with the invasion, they can chew through most materials, dry wall and go through holes size dime quarter, and ; bigger, and cause severe fire or water damage if not dealt with fast,see rat's especially are very illusive and skittish but highly colonized and smart, i specialize in Rats and Mice for over 20 years i have studied in rodentology & in entemology the studies of insects, i shadowed as a helper to a man from Detroit for 6 years who was a USA 40 year veteran ,Also full bee & hornet and ; wasp removals done, if you have any bug issues , feel free to call, cockroaches, weeviles ,silverfish, ants,spiders, Japanese beetles, aphids ,mosquitoes, the Zika virus is now in BC and it's deadly if bitten potentially, your yard should be sprayed by me after a rain fall where there is a couple of sunny days in a row i use organics! Call Doc the rodent expert of the Fraser Valley! blessings have an awesome day/week!,PEST-CONTROL, PEST TECHNICIAN, MASTER EXTERMINATOR! WE are the only Organic Pest Control company in the area the rest use chemicals! why would you take a chance or roll the device with chemicals in your home or business! call us ASAP for safe organic work to be done and rid your problems! blessings to all!