Spam comments remain a large problem for WordPress users. Actually it is not uncommon problem for some WordPress websites to receive hundreds of spam comments weekly. Some of my clients complains that the time they have to spend to go through those spam comments is enormous.
Thankfully, tackling spammers is not that hard with using a good anti-spam plugin and you can block the vast majority of spam comments from your website. We use a plugin called, Anti-spam. They don’t use captcha and require any setting. You just install, activate, and it just works.