These two ingredients are commonly touted as natural cleaning methods, but combining the two in the same container could result in a corrosive acid.
Why: You can use them on the same surface separately while cleaning, but don't mix them in the same container. You'll create paracetic acid which, despite being an effective sanitizer, is potentially corrosive and irritating.
The worst that could happen: The health risks aren't well-known, but in high enough concentrations, paracetic acid "is very irritating to the skin, eyes, nose, throat, and lungs, with the potential for causing permanent scarring of the skin, cornea, and throat."
Read more here about how to properly use these two products in your household cleaning routine.