I think it's pretty annoying that piriform includes avast with CCleaner, I even pressed "customize" during the installation, but they had hid the Avast installment under yet another option. I like CCleaner, and it's okay that they offer us Avast, but it is not okay to force it on us.. Please make it more clear what software you are installing on our computers in addition to CCleaner.
The offer for Avast is only displayed on the first page of the setup.
https://forum.piriform.com/search/?&q=avast install&type=forums_topic&nodes=4&sortby=newest
just got caught with this sneaky install of Avast
knocked out my Kaspersky install
very pissed off
now have to find my liscence number and reinstall Kaspersky