Correcting 404 error page not found
When a web page or post is added to your website it is submitted to the search engine, it that url changes after it has been submitted the result of a change is a 404 error page not found.
A 404 error page not found can happen if you change.
Your permalink settings.
Add a categories
Change of name on your page.
Google Page Console https://www.google.com/webmasters/
To Monitor and Correct 404 error page not found problems on your pest control website, You Should Install on your website.
404 Monitor plugin
301 redirect plugin