PetSmart offers free shipping sitewide with no minimum purchase required during its Weekend Savings Event. It even stacks with sale items. That's only the second no-minimum free shipping offer we've seen from PetSmart this year; shipping usually starts at $6.49 for orders under $49. Canned, fresh, and frozen dog and cat food, cat litter, and some other exclusions apply. Deal ends July 6 at 6:29 am ET.

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