I have a pair of roborovski hamsters. Although I understand that they are not supposed to be bathed with animal shampoo, their fur coat are not in proper condition. Their fur coat always in oily condition where they are not fluffy as they should be. Grooming themselves doesn't help. The only solution is to bathe them in sand where the sand helps to absorb their natural oil and keeps their fur fluffy and clean. Hence, I'm wondering whether they can be kept in sand (as bedding) since their natural habitat is in desert, to maintain the cleanliness and fluffiness of their fur.

