A foam box versus a thick-wall container cannot be decided from a general claim about dry-ice use or operating time. Load, closure, ambient conditions and handling affect the result.

Compare the same configuration. Prepare both packs for the same product quantity, starting conditions, dry-ice loading plan and route. Keep dry ice from direct product contact; follow carrier and packaging-maker safety, ventilation and acceptance requirements.

Place a logger beside the product and collect temperature data through delivery. Weigh packages at start and arrival only under an approved safe procedure. Record measured dry-ice loss and product condition; the trial applies to this configuration.

Calculate total cost per shipment. For single-use packaging, total package + dry ice + freight + surcharges. For a returnable container, divide purchase cost by actual uses, then add dry ice, outbound and return freight, cleaning, maintenance and losses.

Include return handling, labour and acceptance requirements for both options. Use your quotes, invoices and shipment records for prices, service life and dry-ice quantities instead of estimates.

Choose the arrangement that meets the same product range, is accepted by the carrier and has a measurable total cost.