I've been washing my year 2 rainbow ponies and unicorn and pegasi ponies this week so I can arrange them in my pony room. This is a huge undertaking as I have at least 2 if not more of each of the ponies and many of my year 2 ponies are in the worst condition of any G1s in my collection. Anyway, some of my first ponies from when I started collecting are partially filled with silica gel beads. Me and mlp4me went in on a gallon bucket of silica when we started collecting to put in our ponies when we are finished cleaning them inside and out and drying them. I've noticed that my silica filled ponies have virtually no cancer, except 1 who was in terrible condition when I got it. So I went in my pony room and looked at all of my other ponies with the silica and no cancer on any of them either. It could just be a coincidence but I think I'm going to buy another bucket of silica to fill the rest of my ponies. It couldn't hurt anyway since it controls moisture.