Nice article Mary, very well written ... and I too got a kick out of the title!
Although I've found a snake in my house a time or two it was never a Rattler or venomous type, Yikes!
I've had a love-hate relationship with Sansevieria over the years and currently only keep a couple of smaller plants indoors. In some parts of Florida Sansevieria grow in-ground but they are listed as a Category II invasive here, so for those living in Florida (especially the southern part of the state), take heed ... the Snake Plant is best kept containerized or it will multiply and take over the area where it is planted.