A Lower Hutt mum whose kids' Kmart play sand tested positive for asbestos says she's stressed out and worried about whether she's done enough to make sure her kids and house are safe. Several coloured sand products have been recalled over the contamination scare. Kmart is the main retailer involved and has sold 67,000 units of the potentially asbestos laced sand play sand. Keren Lee, who's sand has tested positive for asbestos, spoke to Lisa Owen.