Your Carqon seat cushion is splash-resistant, so clean the cushion by hand with a bucket with water, a sponge, a hose and mild soap, free from strong chemicals. Put pressure on the dirty spots to clean the cover. 

• Remove the cushion from the box.
• Check the weather forecast and pick a day without heavy rainfall, so the material can dry.
• Don’t use bleach or other chemicals.
• Don’t use a pressure washer.
• Don't use an excessive and unnecessary amount of water