Cuisinart TOB-260N1 Convection Toaster Oven

I bought a brand new one and it has been great except that it is impossible to clean the interior. It seems to be aluminum inside but I’m not sure. The instructions booklet says not to use abrasive cleaners and not to put cleaning solution directly on the interior walls. Cleaning solution should be applied directly on the sponge used to clean the interior. Well, anything that splashes grease during cooking is going to splash it all over the inside of the oven and a soft sponge with cleaning solution on it is not going to do the job. Consequently, you will end up with a dirty oven and no way to clean it. Other than that, my oven has worked perfectly.