Igloo Cat House CAT JUST HAD 4 KITTENS?

CAT JUST HAD 4 KITTENS? - igloo cat house

My cat had 4 kittens this morning and its almost 7pm and left little in the Igloo, where she gave birth, even to the toilet. I have a new house for them to carry on and I wonder what someone knows when to do it and it is normal for them, still in the box, where she gave birth.