Amazon has select Blue Buffalo Dry Dog/Cat Food on sale Buy 1 Get 1 50% Off. Note: search "Blue Buffalo" to only show Blue Buffalo products. Shipping is free w/ Amazon Prime or on orders $25+.
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Chewy has select Blue Buffalo Dry Dog/Cat Food on sale Buy 1 Get 1 50% Off. Note: filter by dry food and look for green banner "Buy 1 Get 1 50% Off". Shipping is free on orders $49+.