How can I clean my mattress cover with upholstery shampoo?

Question

it says clean only with upholstery shampoo. how can I do it?

Answer 1

You might want to consider getting a mattress protector.  They fit like a fitted sheet, are waterproof, dust mite barrier, etc.  They can be easily removed and washed and dried.

Answer 2

You could take it to the laudromat and wash on warm. Most laudromats have larger washing machines. Take it home and hang outside to dry.