Mould: We do our best to get everything as clean and safe as possible, taking advice from manufacturers about the most appropriate processes and products. We often encounter black mould on fabrics, and it tends to leave permanent marks. We do not use peroxide, bleach, or any other mould/mildew removal products, so if you are unsure about whether to use your prams etc if mould is present, we strongly recommend seeking advice from a qualified source, such as the following:
https://www.nhs.uk/common-health-questions/lifestyle/can-damp-and-mould-affect-my-health/