Use Blue Dawn--our go-to cleaner----does the job right .

The ammonia you buy at the grocery store really cuts grease!

I clean my range vent filters often but still it starts to look yucky after a few years. I buy a new vent hood. The cost is not that much considering the time it takes to deep clean one upside down and if I took it out, a new one would go back in. Over and done with.

I had the same problem when I moved into this house. Seems the previous owner when he installed the microwave above the stove he positioned it level with the bottom of the cabinets so very close to the stove. They must have ate a lot of greasy food. I had my carpenters move the cabinet and microwave higher above the stove and that's when I found the oven light switch. Couldn't see it before. Anyway, I removed the metal filter and soaked it in boiling hot water with vinegar and Dawn dish soap (blue). It came out clean with a little help from my scrub brush/toothbrush I keep handy under the sink. Same went for the microwave innards as it was crusted with old food....YUCK!!!!!!

That was my thought or the stuff they use to clean outdoor grills. Of course I can't think of the name. I believe Easy-Off and Goo Gone both have grill cleaners.

I have found that Pledge Multi surface cleaner takes off grease really well and it is "safe" for granite, metal wood glass and electronics. The other thing you could try is to spray it with an ammonia mix and then tape a plastic bag around it some way. Leave it over night to cut the grease. That is the product in Easy Off for ovens that cuts the grease in the oven.

I am going to suggest an old fashioned cleaner...baking soda. Baking soda works wonders on grease. I use it to clean the oven. I just make a bit of a paste with soda and water and if possible let it sit a moment. You will see it turn brown and that means it is absorbing the grease. If this is not an option then just make a solution and wipe things down with a sponge. It takes a bit more work that way but is every bit as effective. I also use a paste solution on the exterior of my cast iron cookware. I use the cast iron for most all my cooking and the outer surface can get crusty over time. My DMI used to toss her cast iron in a bonfire once a year to clean off the edges, but a bonfire is not an option for me. In another hint, just add about a table spoon of Baking Soda to the dishwater in addition to the soap [I don't have a automatic dishwasher] the dishes and glass ware will come out sparkling clean with just a swish after a bit of a soak. There are many more uses for Baking soda, including a treatment for a clearer skin, shampoo, acid reflux, too many to go into here. It really is a sort of a jack of all trades substance.

Remove the underside and soak in full strength Lestoil.

Awesome cleaner is my go to cleaner.

Dilluted Draino gel...or any kind of drain cleaner