How to stop drains smelling

swiftfreestlye2010
swiftfreestlye2010 Forum Participant Posts: 11
edited June 2013 in Caravans #1

Does any one have any ideas how to stop the drains from smelling ?

we do not leave any water in them and always flush them through but even after a week they start to smell

we have tried milton tables and they still smell so any help will be nice ?