Heh I remember reading something along those lines Will - I'd be hesitant too. What happens after they've done thier job? Do they hang out and die off or move on out into your general household - heck they might even find humans suitable. Need some engineered nano-critters for the job. Onse you've dealt with em and found em craling on YOU from the snake . . man every little itch or hair popping up on my arm just . . . guh!