There are special stamp cleaners out there to clean your stamps & you should do it regularly.

http://www.scrapbookingparadise.com/ranger_rubber_stamp_cleaners.htm

I was taught at a stamping party that plain old baby wipes do a great job! If you happen to be stamping & embossing on a road trip they really do duel purpose, (cheaper)

Baby wipes, of course! I just bought a little bottle of stamp cleaner. Do you find it difficult to find embossing pad ink to re-ink my stamp pad? I couldn't find any at Michaels.

I found a bottle of this at Hobby Lobby. You can use plain old ink pads you simply need to work a little faster. This way if you use the translucent powder it gives you more color choices.