Amazon (AMZN) and Walmart‘s (WMT) Jet.com are kicking their appliance sales into full gear, and Sears best be on high alert.

“Over the last several months, we have seen Amazon and Jet.com expanding their appliance offering, which could create a growing risk to Home Depot, Lowe’s and others,” BMO Capital Markets analysts Wayne Hood, Brian Welsh and Steve McManus said in a research note Tuesday. They warned that Home Depot (HD) and Lowe’s (LOW) “will have to keep their pencils sharpened” to keep up with the lower prices they are already seeing on certain appliances from Amazon and Jet.

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