If your dog can be handled it is likely they will have been bathed following reservation, however, many of our dogs are too nervous to be bathed at the centre.
Due to the neglect they have received throughout their life expect their skin to be a bit skurfy with dander build up. It will take a few baths and a bit of grooming to get their coat and skin in good condition - a good quality diet helps too.
When it comes to bathing, many dogs hate being bathed. It should only be done if necessary, or a groomer who is used to handling Rommie dogs could do this for you. If your dog cannot walk on a lead do not take them to the groomers as you will set them back.
Desensitising to the bath would be your best option but it it will take a while for your dog to tolerate it. In the meantime you could do a sponge bath in the garden instead.