If not cleaned properly on a regular basis, restaurant exhaust systems can become clogged with grease or oily sludge. Sometimes the only way to remove it it by crawling through and manually scraping the duct. It is not an easy job. View this post on Instagram It ain’t easy being greasy #greaseballer @mikerowe A post shared by Bryan Exhaust Service (@bryanexhaustservice) on Nov 5, 2019 at 6:43am PST