What can i use to clean an oven?
Soda cleans it. I keep my new oven clean now from the start and use Cillit bang every time I use the oven and cooker. It works. Check which on because the red topped one is stronger and you can’t use it on plastic. Or ordinary oven cleaner and leave it on. That has caustic in it and smells strong. You need over gloves and plenty of old cloths you can throw away. Also do not mix anything else with it, such as bleach. Read the instructions and adhere.