Leave outside the bathroom door (or on the toilet seat lid if you have a floater problem) to pre-warn them before they take a lung full of foul fumes. The orange cone is a miniature version of the classic traffic cone and can be used for bathroom and toilet smells, along with other rooms if you have just let off a ripper. Mark the contamination zone efficiently with our Toxic Gases Toilet Caution Cone before they smell danger. The Toilet Caution Cone features a warning of 'DANGER! TOXIC GASES...GIVE IT 10 MINUTES' so that your fellow housemates will be well prepared for finding an alternative privy.