The crossword solutions for the term 'better mousetrap' are CAT, which stands for 'Catch All Traps'. This is a phrase that has been used since the 19th century to describe an invention or idea that is superior to existing ones. The phrase is often used to refer to inventions that are more efficient, effective, or economical than existing ones. The phrase is also used to refer to any new idea or concept that is better than what already exists.