Blog Comments are pouring into my website. I wrote the blogs for SEO and i am currently deleting it manually. How to clear them easily?
You should be able to clear them out of the database with a simple DELETE query. Or just check boxes in phpMyAdmin and deleting the offending rows.
If you are afraid to work in the database, you can get a wp plugin called copy/move and that will improve the speed of moving them to the delete bin. (if you are talking about comments)
If the poster is afraid of tinkering with the database, he or she should make a backup of it first. That is always a good idea anyway.
Turn on askimet, tell it to search for spam... then run this https://wordpress.org/plugins/wp-clean-up/