Using this tool violates Canon’s end‑user license agreement. In some jurisdictions, circumventing protection mechanisms (like waste ink counters) could violate copyright or digital rights management laws.
Yes, it costs money. But a genuine service center will replace the waste ink pad, reset the counter properly, and often provide a 90‑day warranty. Cost is typically $40–$80 — often less than a new printer.
The utility can reset ink counters, which is particularly useful for users who utilize third-party ink tanks or Continuous Ink Supply Systems (CISS), as these often do not report levels correctly to the printer.