At the Court of Session, the claimants argued that although there was no direct evidence that the manufacturer had been negligent in preparing the ginger beer, negligence could be presumed (res ipsa loquitur) from the mere presence of dead mice in ginger beer bottles. However, the court ruled against the claimants. The majority held that on a factual basis AG Barr & Co Ltd had rebutted a presumption of negligence and that on a legal basis product manufacturers only owed a duty of care to the ultimate consumers if there was a contractual relationship between the parties; if the dangerousness of the product was intentionally withheld from the consumer (in which case there might also be a claim for fraud); or if there was no warning of the intrinsic dangerousness of certain products, such as explosives. Only Lord Hunter dissented, finding that negligence to be inferred and that the fact that the bottle contents could not be examined (because of the dark glass) gave rise to a specific duty of care that would allow consumers to claim for damages.