I definitely wouldn't use that.The ingredients are much too vague to be safe.Zooplus delivers to Portugal and they sell this which would be a much better choice:
Excelentes ofertas em comida da Bunny para hamster na zooplus!: Bunny ZwerghamsterTraum Expert comida para hamsters anão
They also sell hemp which would be a good substrate choice(relatively low in allergens and much safer than wood substrate,plus cheaper than Carefresh and most likely lower in dust!)so you could order that at the same time
