Best and eco-friendly way to completely disinfect a tile kitchen floor?

A spray bottle with a diluted bleach solution would be eco-friendly and effective.

A couple of tablespoons of bleach to a quart of water.

Bleach is not that toxic, to humans, but it is a great disinfectant.

Make a dilute solution using either an ammonia based product (like Pine Sol) or a bleach product (like Clorox) and water. Either of these (by themselves) do a great job of disinfecting and are pretty benign.

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