Which Alteryx tool can remove unwanted characters from a string?

The Data Cleansing tool is designed specifically to handle the removal of unwanted characters from strings, making it an effective choice for this task. It offers a range of functionalities, including the ability to remove whitespace, special characters, or specific unwanted characters from string fields. The tool streamlines the process of cleaning data by providing a straightforward interface to specify which characters to eliminate, allowing for improved data quality and consistency.

While the Formula tool can be used to manipulate strings, such as through custom expressions to replace or trim characters, it requires more manual effort to set up specific conditions for removal. The Join tool focuses on combining datasets rather than cleaning or transforming individual strings, and the Input Data tool is used mainly for bringing data into the workflow rather than modifying its contents. Therefore, the Data Cleansing tool stands out as the most appropriate choice for efficiently removing unwanted characters from a string in Alteryx.