I just asked about cleaning old couch/chair cushions??

YOU WOULD HAVE TO REMOVE THE FABRIC COVERING ON THE BOTTOM TO GET AT THE SPRINGS. THIS IS NOT HARD TO DO AND ALL YOU NEED IS A GOOD STRONG STAPLER TO PUT IT BACK INTO PLACE. USE A GOOD STRONG TWINE TO TIE THE SPRINGS. I HAVE NEVER POWER WASHED CUSHIONS SO CANNOT COMMENT ON THAT.

Are there zippers

For cleaning them, I would rent a carpet shampooer (you can sometimes rent them from grocery stores for a couple days) and spray the couch down and use a shampoo that won't damage your cushions. My husband does this with our micro fleece couch once a year and they are like new afterwards!

I unzip cushion covers and wash in my washing machine. The trick is to re stuff them before they dry, so they don’t shrink. Put them in the sun to dry, they don’t take long.