Cleaning a Silk and Polyester Dress?

I have a dress that is 65% silk and 35% polyester with no washing instructions. How do I care for this dress, dry clean, machine wash, or? I do have a front load washing machine and dryer or should I use those dry cleaning bag that go in the dryer? I used it once or twice many years ago. I do my best not to purchase dry clean only clothes. Can someone help me with cleaning instructions? Please.