I have been well using the regular size mat for three weeks and it's still looking new. We do use a washing up bowl. Having read the reviews re staining on other mats I've been ensuring it was rinsed thoroughly after washing up. However, hubby ignored the reviews and rinsed a tom soup tin out down the side of the washing up bowl and left it. Great, I thought, next day when I saw the orange staining but I laid mat on draining board covered in neat bleach. Staining gone. The circles I had left from the plug hole cut out make great replacements for lost feet for the glass worktop protectors.