Of course both of these are potentially damaging to Skin or Eyes, so use caution - wear Rubber Gloves and a Face Shield if need be, and be sensible and aware of others in the area or others who may access the area.
Children or other Pets of course need to be kept away from Oven Cleaner or Buckets of strong Lye or Caustic Soda Solutions.
Keep a Gallon of Apple Cider Vinegar Handy to use as a Neutralizer if any splashes or spills.