Just a note on Simple Green: Got this from the website. I have no idea if it matters
or not but worth posting.
Inhalation - Is inhaling Simple Green® hazardous to my health?
Problems can result if the mist of Simple Green is breathed into the nose or throat. This is true of practically every cleaner on the market. Because Simple Green contains surfactants (surface-active-agents) and because surfactants have the ability to lift grease, oil and soils up off of surfaces, an aggravation of the mucous membranes of the nose and throat can result from breathing in misted particles of the product. This can cause sore throat, sore nose, sore sinuses, coughing and -in extreme cases- a tightness in the chest. Although uncomfortable, Simple Green is non-toxic and these are completely reversible symptoms. Persons with chronic asthma, emphysema, or other lung conditions should take precautions and avoid breathing in surfactant mists.
I found this online as an alternative which works:
To clean my oven, I sprinkle baking soda all over the bottom until it is covered completely with about 1/4 of an inch of baking soda. Then, using a clean spray bottle, I spray the baking soda with water until the baking soda is thoroughly damp but not flooded. After that, this lazy cleaner goes off and does other things. When I think of it, I dampen the baking soda again if it is drying out. Before I go to bed, I do that again. When I wake up in the morning, the baking soda can effortlessly be scooped out of the oven with a sponge, bringing all the grime with it