TL;DR: Through March 26, you can get the Narwal Freo self-cleaning robot vacuum and mop combo for $1,049 instead of $1,299 when you use the code MASHABLE1 at checkout. That’s about 19% in savings for a limited time.While household cleaning robots continue their relentless march into homes around the globe, it’s hard not to be at least a touch dubious about those little techno-critters. And we don’t even mean in the robot takeover, singularity apocalypse, Skynet-kinda way. But until then, wouldn’