hi jamie,
some version can even mop floor but i only have the type that can vacum. Check out this website.
http://www.irobot.com.sg/
the cost is around $800, still cheaper than hire part time maid.
yes, it can vacum by timer even when you are not at home. Then if it get stuck on an object, it will stop. For instance if it knock onto the kid's leg, it will bounce back and go to another area, very clever. It is flat so able to vacum under the bed, cupboard, etc.
some version can even mop floor but i only have the type that can vacum. Check out this website.
http://www.irobot.com.sg/
the cost is around $800, still cheaper than hire part time maid.
