This is why it is important to clean them regularly to ensure they last longer.
Disclaimer: this DIY oven cleaner hack needs to sit overnight to deep clean the whole oven.
Materials:
Directions:
Prepare all the necessary materials and your dirty oven.

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Take the racks out of the oven.
confirm to check your oven manual to see if everything is dishwasher safe.
Otherwise, hand wash them in warm soapy water and set them aside to dry.

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Next, wipe out any loose food particles using the sponge.
Then, mix 3 parts of baking soda and 1 part of water in a bowl.
Mix until it turns into a pasty texture.

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Using your sponge, apply the mixture to your oven.
verify to focus on areas that look especially dirty.
However, do not put the mixture directly on the heating elements.
exit the oven, let the mixture sit, and do its job overnight.
After 8 hours, wet a sponge with warm water and clean out the baking soda mixture.
Occasionally rinse your sponge when it starts to become dirty.
For the leftover sponge, grab a spatula and scrape it off.
In the spray bottle, fill it up with 1 part vinegar and 1 part water.
Spray the oven with the mixture and wipe it off with the sponge.
Insert the racks back into place, and it’s possible for you to start cooking again.