Milan Dinić

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This plugin cleans every transient from database older than one minute using safe native WordPress function. It works on multisite too.
By default, it will check for expired transients once daily, though you can call it any time using <code>Clean_Expired_Transients::clean();</code>.
Clean Expired Transients is a very lightweight, it has no settings, just activate it and it works immediately.
Note that it can be used by developers in their project in any place, it doesn’t require activation and it’s safe to use since it checks is there existing installation, just include it.
And it’s on <a href="https://github.com/dimadin/clean-expired-transients" rel="nofollow ugc">GitHub</a>.

Clean Expired Transients

Safest and simplest transients garbage collector.

Surbma

CherryPick Studios

This plugin is a Multisite plugin. It can be activated only in network wide. The Surbma | Multisite Transient Cleaner plugin deletes ALL transients from ALL sites in a Multisite. So please be careful and don’t forget to backup your database before acivating this plugin!
The transient deletion only runs once, when the plugin is activated. You can leave it as is, but I strongly recommend to deactivate it and activate again, if you need so.
I don’t recommend this plugin for anybody and I don’t promise anything, this plugin can solve, it is doing, what it says: deletes ALL transients from ALL sites in a Multisite. If you need a simple way to do just this, this plugin will do the job.

Surbma | Multisite Transient Cleaner

Deletes ALL transients from ALL sites in a Multisite.

Clean Expired Transients vs Surbma | Multisite Transient Cleaner