I figure a lot of people have dogs on these forums so I think it's appropriate to post this here:

"The following is from a report emailed to MARC (Another reason not to use such products is that they are no doubt tested on, and then kill, poor lab animals before they kill our pets. Not to mention what long-term use might do to humans and the rest of the environment! Only use environmentally safe, non-animal-tested/no animal-byproducts, cleaning aids.):

I recently had a neighbor who had to have their 5-year old German Shepherd dog put down due to liver failure. The dog was completely healthy until a few weeks ago, so they had a necropsy done to see what the cause was. The liver levels were unbelievable, as if the dog had ingested poison of some kind. The dog is kept inside, and when he's outside, someone's with him, so the idea of him getting into something unknown was hard to believe. My neighbor started going through all the items in the house. When he got to the Swiffer Wetjet, he noticed, in very tiny print, a warning which stated
"may be harmful to small children and animals." He called the company to ask what the contents of the cleaning agent are and was astounded to find out that antifreeze is one of the ingredients. (actually he was told it's a compound which is one molecule away from antifreeze). Therefore, just by the dog walking on the floor cleaned with the solution, then licking it's own paws, and the dog eating from its dishes which were kept on the kitchen floor cleaned with this product, it ingested enough of the solution to
destroy its liver. Soon after his dog's death, his housekeepers' two cats also died of liver failure. They both used the Swiffer Wetjet for quick cleanups on their floors. Necropsies weren't done on the cats, so they couldn't file a lawsuit, but he asked that we spread the word to as many people as possible so they don't lose their animals."