To ensure discoverability, place the robots.txt file in the top-level directory of your website (www.example.com/robots.txt)

Remember that robots.txt filenames are case-sensitive; use "robots.txt" for consistent naming, not variations like "Robots.txt" or "robots.TXT."

Be aware that some user agents, especially malicious ones like malware robots or email scrapers, may disregard your robots.txt file.

Keep in mind that the /robots.txt file is publicly accessible, so avoid using it to conceal private user data as anyone can view your directives.

Separate subdomains within a root domain should each have their own robots.txt files, e.g., blog.example.com and example.com should have distinct robots.txt files at their respective locations.

It's advisable to specify the location of associated sitemaps at the end of your robots.txt file to facilitate proper indexing.

Google Search Console advises against blocking CSS and JS files to ensure proper website rendering and indexing.

URLs are case-sensitive, so make sure that directories, pages, and file extensions are in the correct case.