I live in the northern climates and never have a problem with LP static and no humidifier either.
I use a good wet cleaner on all LPs, previously the Record Doctor and now a Humminguru ultrasonic.
Clean and then place in a mofi antistatic sleeve and have never had to use any type of anti stat device. The Humminguru was the best investment I have ever made. The Record doctor also worked well but was manual operation.