Re4DeR

<p>This plugin is very usefull if you want warn people going to one category.</p>
<p>It set cookie, co visitor will see alert message only once.</p>
<p>For example you have a magazine and in one category you have adult content.<br />
With this plugin you can set up warning for access to this category-and user have to confirm your message.</p>
<h3>A brief Markdown Example</h3>
<p>Ordered list:</p>
<ol>
<li>Choose between alert and confirm</li>
</ol>


WP Warning

This plugin allow you warn visitors when they want to go in category.

Krunal Prajapati

<p>Add a disclaimer/terms/warnings about post/page/custom post type on top, bottom of content as well as inside post content</p>
<h4>Features</h4>
<ul>
<li>Disclaimer on Post/Page or Custom Post Type</li>
<li>Customized Options</li>
<li>Custom CSS Option</li>
<li>Individual Post/Page or Custom Post Type Options</li>
<li>Font Awesome Icons</li>
<li>Use with Shortcode</li>
</ul>


WP Post Disclaimer

Add customizable disclaimers, terms, or warnings to the top, bottom, or within post, page, or custom post type content for WordPress

WP Warning vs WP Post Disclaimer