Quote:
Originally Posted by Cym Ladye
Water and the heat in the drying cycle are not hot enough in a dishwasher to kill virus. If you really want to kill virus, the best way is to use a 5% solution of bleach and soak pots, saucers and potting utensils for several hours.
|
True, the heat of the drying cycle won't kill all viruses, but that is not the point. Most are dead or gone long before that. Heated wash cycles are more effective, and the surfactants, enzymes, and often bleaching agents in dishwashing detergents do even more in terms of sanitizing. Some bacteria and viruses may survive, but most are simply washed away along with everything else. They have no significant means to adhere to surfaces, and if they did adhere through wash and rinse cycles what could ever loosen them to allow them to infect anything? Dishwashers are very effective at sanitizing hard surfaces.
On the other hand, bleach can be very ineffective unless all organic residues and mineral deposits are completely removed first. A 5% solution, assuming that means 5% of a typical household bleach product, might be strong enough to do some good if the formulation of the product is over 5% hypochlorite to begin with (many are not) and if the product is fresh. Bleach loses strength rapidly after it is opened. I wouldn't count on anything less than a 10% solution of a typical household bleach doing the job, and only in the first few weeks after it is opened.