Every once in a while I will notice my kitchen drain needs a freshening up. You know the smell.
I used to use bleach but my daughter is very sensitive to it permeating the house so I discovered a more natural approach years ago.
Take some baking soda and white vinegar.
Generously sprinkle the baking soda around and in the drain. About a 1/4 cup.
Then pour about a cup of vinegar over the baking soda and watch it fizz. You will hear it fizzing all down the drain. Let sit for about fifteen minutes.
And wash it all down with a pot of boiling water.
We are on a sewer system so I wonder if this is better than bleach if you have a septic tank. Seems like it would be. Helps keep the drain nice and clear too.