You NEED to keep this in your reloading area.
If you don't already, you are just ASKING for trouble if you don't have one of these in your reloading area.
This is especially true if you anneal, but you really should have one in there anyway. It could save your life, lives of your family, and possibly everything you own. For $50, that's some pretty damn cheap insurance. I just recently got one, and I feel like a complete moron for not having one around for the last 20 years. For some reason, it just never came up.
At the very least, get this little one: http://amzn.to/29l9mE9
Probably not a bad idea to have in about every room of the house. I know when I had renters insurance I got a discount when I bout a fire extinguisher.