The invention relates to a disinfection method to be used for cleaning. The invention is characterized in that hydrogen peroxide (H2O2) is drained/transferred from one or more tanks (16) by a liquid pressure created by one or more pumps or gravity, through one or more draining pipes (6) to one or more draining devices (5), which draining device (5) drains hydrogen peroxide to one or more onto one or more evaporation top surfaces (4ea) of an evaporation member (4e) of a warming/heating device (4), the evaporation top surface (4ea) is at an evaporation angle (4ej) of 1 to 30 degrees in relation to the horizontal plane so that the end on the draining device (5) side draining end (4c) is higher than a gas discharge end (4d) at the opposite end of the draining device (5) of the warming/heating device (4), whereby hydrogen peroxide spreads by gravity on the evaporation member 4e where the hydrogen peroxide (H2O2) turns into hydrogen peroxide gas by means of which hydrogen peroxide gas disinfection is performed, the evaporation member (4e) consist of one or more braidings or mat or fabric that is either in its entirety or partly a mixture of the aforementioned materials such as nylon or polyester (PET) or PEN fibre (Pentex) or kevlar or technora or twaron or spektri or dyneema or cetran or zylon (PBO) or vecran or fibre glass braiding or carbon fibre or perforated plate or metal net or aluminium oxide.La présente invention concerne un procédé de désinfection à utiliser pour le nettoyage. L'invention est caractérisée en ce que du peroxyde d'hydrogène (H2O2) est drainé/transféré depuis une ou plusieurs cuves (16) par une pression de liquide créée par une ou plusieurs pompes ou la gravité, à travers une ou plusieurs conduites de drainage (6) vers un ou plusieurs dispositifs de drainage (5), lequel dispositif de drainage (5) draine le peroxyde d'hydrogène vers l'une ou plusieurs sur l'une ou plusieurs surfaces supérieures d'évaporation (4ea) d'un élément d'évaporation (4e) d'u
