bento punches

What the difference is in decorative punches..

I am new to bento making and I was wondering about the punches used to make designs in seaweed sheets. I know you can order the punches from JBox but what has me curious is what is the difference between the decorative punches that JBox sells for Bento versus the decorative punches you can find in craft stores for scrapbooking?From the picture they look identicle. If you get a new decorative scrapbook punch and wash it thoroghly can it be used in the same manner with no negative side effects?
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