Laundry detergent for baby? 👶🏻💦

Lo
Is it really necessary to use baby detergent or free and clear detergent etc? Something I just read said to "wash everything in the house with baby detergent before baby arrives." What!? We normally use tide but I could maybe switch to a non scented, allergy free one. But baby detergent is $$!? Any advice?

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