Visitors can configure their browsers to refuse cookies or to be alerted when a site is attempting to send a cookie, although some PETA e-commerce pages will not function properly without accepting cookies. PETA and third-party vendors, including Google and Facebook, use cookies and pixels to show website visitors ads based on a visitor’s prior visits to the website as well as first-party cookies (such as the Google Analytics cookies) and third-party cookies (such as the DoubleClick cookie) together to report how ad impressions, other uses of ad services and interactions with them correspond to visits to our web site.