Ds won't contemplate not wearing nappies or use the loo. Occasionally we have had success with him using the loo for a wee. We have one of those seats that looks like a step ladder and I'm sure that's putting him off as it's a bit wobbly. If it were my choice I'd out him in pants so that if he does go he's uncomfortable. My dw is worried about the carpets and soft furnishings... our older ds was a breeze and we are looking for help to overcome this stressful period..