A friend brought the problem of redback spiders to my attention and I realized I hadnt done enough research. As I came down into the toilet I found a spider on the floor. Ran up to google redbacks to see a pic and as I checked the one I had in the house I couldnt see anything red on it, and in the wikipedia pic it was black and mine was more light brown so Im quite sure it was not a redback however I didnt even dare stepping on it but I used a big piece of cardboard box to kill it. Goodbye spider! Now I hope I will be spared more spiders for a long time....