Related Clues:
- Wood ash products
- One side of the pH scale
- Cleaning cabinet compounds, perhaps
- Reactors to litmus
- Boric and amino
- Detectives go in because they're sour
- Detectives get inside as they're sharp
- Soap-making ingredients
- Sodium hydroxide solutions
- Lemon juice and coffee, on the pH scale
- Vinegar and others
- Harsh cleaners
- Caustic agents
- Reg leaves in disgrace with corrosive types
- Caustic cleaning supplies