Does anyone remember (quite a number of years ago) of the woman who found a venomous spider lurking in her bedroom? When the boffins checked it out, they named it as a particular type of spider that never was without a partner!!! So the search began for its' mate. She disclosed that the mattress had come from the country she had been living in (can't remember), and that is where this particular species of spidy was from. So they closely examined the mattress, and there in the cornermost part was the other spider with young!!
Fancy sleeping on a mattress not knowing that inside was a deadly .........aarrgghhhh!!!!
Anyhoos, can't recall the story exactly, but it was something like that.