Logs are going to be full of junk from bots. Unless it's actually breaking something, IMHO it's better to just accept that and move on. (If you're using Apache

Logs are going to be full of junk from bots. Unless it's actually breaking something, IMHO it's better to just accept that and move on. (If you're using Apache and do want to start fighting bots, I'd suggest taking a look at mod_security. Very powerful, but beware that the default rules can be touchy)