Yes, you can put lavendar or tea tree in and it doubles as a hygiene rinse. I use lavendar because it doesn't make my skin peely. Just a few drops in the softener dispenser and that's it. Makes nappies smell yum and kills any bacterial nasties in one go. I also use lavendar oil to wipe out nappy buckets before I air them outside for the day. Stops them getting whiffy.

