Pl*co, I think you probably have nothing to worry about

I just found a very odd, cute little site dedicated to information on silica gel (some very interesting people out there!) which states:
"Obviously, Silica Gel isn't actually gel. Basically, it's pourous sand. Silica is made up of SiO2, Silicon Dioxide. That's the same material that's found in Quartz. It's used as a drying and dehumidifying agent and as a catalyst and a catalyst carrier. It's also found in cosmetics, as an anticaking agent.
Although Silica Gel is harmless to use, non-toxic and totally safe, the phrase "Do Not Eat" printed on the packet is for good reason. If consumed in large quantities, it could dry up the liquid every human needs internally, and ultimatly kill you. Therefore, I suggest to stay away from eating this material. Another reason is that some kinds of Silica Gel contain Cobalt Chloride, which is proven to cause cancer. Silica dust can cause Silicosis, and other serious respitory problems. Since Silica Gel absorbs and holds other substances, it's possible it absorbed something harmful that would make it unsafe to eat. Although most of these situations are highly unlikely, I would play it safe and not eat the Silica Gel. The main reason it says "Do Not Eat" on the package, is so the company doesn't get sued. (Ever noticed that hairdryers say "Do not use while asleep?")"
Here's the
link if you'd like to check out the site for more facts
