How can a baby play pen help a busy mum?

Are baby play pens harmful for our children? We have heard such statements but we do not agree with them. In our opinion baby playpens are there to help, not to harm. Check more at our blogspot page. http://motherandbabyshopaustralia.blogspot.com.au/2016/05/how-can-baby-play-pen-help-busy-mum.html