Si tu sitio web esta en wordpress puedes instalar el plugin
https://es-ar.wordpress.org/plugins/wordfence/
Para bloquear a los bots y controlar las visitas de tu blog.
Por otro lado puedes editar el archivo robots.txt agregando esta lista de robots para bloquear
Insertar CODE, HTML o PHP:
# Robots exclus
User-agent: 5emeRue
Disallow: /
User-agent: 5erue
Disallow: /
User-agent: adequat
Disallow: /
User-agent: adequat-systems
Disallow: /
User-agent: AmiSoftware
Disallow: /
User-agent: Argus
Disallow: /
User-agent: Ask n read
Disallow: /
User-agent: asknread.com
Disallow: /
User-agent: Augure
Disallow: /
User-agent: augure
Disallow: /
User-agent: auramundi
Disallow: /
User-agent: Bloodhound
Disallow: /
User-agent: Cision
Disallow: /
User-agent: coexel
Disallow: /
User-agent: ConveraCrawler
Disallow: /
User-agent: Corporama
Disallow: /
User-agent: cydralspider
Disallow: /
User-agent: Digimind
Disallow: /
User-agent: Download Ninja
Disallow: /
User-agent: downloadexpress
Disallow: /
User-agent: EDD
Disallow: /
User-agent: ellisphere
Disallow: /
User-agent: eureka
Disallow: /
User-agent: Europresse
Disallow: /
User-agent: Explore
Disallow: /
User-agent: Factiva
Disallow: /
User-agent: Fasterfox
Disallow: /
User-agent: Fetch
Disallow: /
User-agent: flipboard
Disallow: /
User-agent: FlipboardProxy
Disallow: /
User-agent: gammaSpider
Disallow: /
User-agent: grub-client
Disallow: /
User-agent: HTTrack
Disallow: /
User-agent: ia_archiver
Disallow: /
User-agent: ia_archiver-web.archive.org
Disallow: /
User-agent: indexer
Disallow: /
User-agent: infoseek
Disallow: /
User-agent: Jetbot
Disallow: /
User-agent: k2spider
Disallow: /
User-agent: Kantar
Disallow: /
User-agent: kbcrawl
Disallow: /
User-agent: Knowings
Disallow: /
User-agent: larbin
Disallow: /
User-agent: leadbox
Disallow: /
User-agent: libwww
Disallow: /
User-agent: linkfluence
Disallow: /
User-agent: linko
Disallow: /
User-agent: manageo
Disallow: /
User-agent: mediacompil
Disallow: /
User-agent: Meltwater
Disallow: /
User-agent: mention
Disallow: /
User-agent: Moreover
Disallow: /
User-agent: MSIECrawler
Disallow: /
User-agent: mytwip
Disallow: /
User-agent: newscan-online
Disallow: /
User-agent: NewsNow
Disallow: /
User-agent: Newzbin
Disallow: /
User-agent: NPBot
Disallow: /
User-agent: ObjectsSearch
Disallow: /
User-agent: Offline Explorer
Disallow: /
User-agent: opinion-tracker
Disallow: /
User-agent: Pimptrain
Disallow: /
User-agent: proxem
Disallow: /
User-agent: QuepasaCreep
Disallow: /
User-agent: Qwam content intelligence
Disallow: /
User-agent: Raven
Disallow: /
User-agent: readability.com
Disallow: /
User-agent: scoop.it
Disallow: /
User-agent: score3
Disallow: /
User-agent: Sindup
Disallow: /
User-agent: sindup
Disallow: /
User-agent: sitecheck.internetseer.com
Disallow: /
User-agent: SiteSnagger
Disallow: /
User-agent: spotter
Disallow: /
User-agent: Synthesio
Disallow: /
User-agent: Talkwater
Disallow: /
User-agent: Teleport
Disallow: /
User-agent: TeleportPro
Disallow: /
User-agent: trendeo
Disallow: /
User-agent: trendybuzz
Disallow: /
User-agent: TunitinBot
Disallow: /
User-agent: TurnitinBot
Disallow: /
User-agent: up2news
Disallow: /
User-agent: vecteurplus
Disallow: /
User-agent: Verif
Disallow: /
User-agent: verticalsearch
Disallow: /
User-agent: vsw
Disallow: /
User-agent: wapspider
Disallow: /
User-agent: WebCopier
Disallow: /
User-agent: WebReaper
Disallow: /
User-agent: WebStripper
Disallow: /
User-agent: WebZinger
Disallow: /
User-agent: WebZIP
Disallow: /
User-agent: Wget
Disallow: /
User-agent: winello
Disallow: /
User-agent: Youmag
Disallow: /
User-agent: Zealbot
Disallow: /
User-agent: Zite
Disallow: /
User-agent: ZyBORG
Disallow: /
Saludos