If you prefer a dedicated third-party tool, look for trusted open-source options:
No discussion about CCleaner and security would be complete without mentioning the 2017 incident. Between August and September 2017, attackers compromised Piriform's software build environment. For over a month, the versions of CCleaner 5.33.6162 (32-bit) and CCleaner Cloud 1.07.3191 that were hosted on the company's own servers contained hidden malware backdoors.
Most instructions included with the patcher explicitly tell the user to "temporarily disable antivirus software" to prevent the file from being deleted. This leaves your machine completely defenseless during execution, which is an immediate red flag for malicious intent. 3. Outdated Security Vulnerabilities