diff --git a/ui/component/channelContent/view.jsx b/ui/component/channelContent/view.jsx
index 71b32e7d2..b865cebf7 100644
--- a/ui/component/channelContent/view.jsx
+++ b/ui/component/channelContent/view.jsx
@@ -174,7 +174,7 @@ function ChannelContent(props: Props) {
 
       {!channelIsMine && claimsInChannel > 0 && <HiddenNsfwClaims uri={uri} />}
 
-      {/*<Ads type="homepage" />*/}
+      {/* <Ads type="homepage" /> */}
 
       {!fetching && (
         <ClaimListDiscover
diff --git a/ui/page/discover/view.jsx b/ui/page/discover/view.jsx
index 2588e9d20..197911878 100644
--- a/ui/page/discover/view.jsx
+++ b/ui/page/discover/view.jsx
@@ -182,22 +182,12 @@ function DiscoverPage(props: Props) {
     );
   }
 
-  // returns true if passed element is fully visible on screen
-  function isScrolledIntoView(el) {
-    const rect = el.getBoundingClientRect();
-    const elemTop = rect.top;
-    const elemBottom = rect.bottom;
-
-    // Only completely visible elements return true:
-    const isVisible = elemTop >= 0 && elemBottom <= window.innerHeight;
-    return isVisible;
-  }
-
   React.useEffect(() => {
     if (isAuthenticated || !SHOW_ADS || window.location.pathname === `/$/${PAGES.WILD_WEST}`) {
       return;
     }
 
+    // inject ad into last visible card
     injectAd();
   }, [isAuthenticated]);
 
diff --git a/ui/page/home/view.jsx b/ui/page/home/view.jsx
index f74134e70..591aa1b9f 100644
--- a/ui/page/home/view.jsx
+++ b/ui/page/home/view.jsx
@@ -1,7 +1,7 @@
 // @flow
 import * as ICONS from 'constants/icons';
 import * as PAGES from 'constants/pages';
-import { SITE_NAME, SIMPLE_SITE, ENABLE_NO_SOURCE_CLAIMS } from 'config';
+import { SITE_NAME, SIMPLE_SITE, ENABLE_NO_SOURCE_CLAIMS, SHOW_ADS } from 'config';
 import Ads, { injectAd } from 'web/component/ads';
 import React from 'react';
 import Page from 'component/page';
@@ -120,19 +120,10 @@ function HomePage(props: Props) {
     doFetchActiveLivestreams();
   }, []);
 
-  // returns true if passed element is fully visible on screen
-  function isScrolledIntoView(el) {
-    const rect = el.getBoundingClientRect();
-    const elemTop = rect.top;
-    const elemBottom = rect.bottom;
-
-    // Only completely visible elements return true:
-    const isVisible = elemTop >= 0 && elemBottom <= window.innerHeight;
-    return isVisible;
-  }
-
   React.useEffect(() => {
-    injectAd()
+    const shouldShowAds = SHOW_ADS && !authenticated;
+    // inject ad into last visible card
+    injectAd(shouldShowAds);
   }, []);
 
   return (
diff --git a/web/component/ads/view.jsx b/web/component/ads/view.jsx
index 0f18ec1b4..2594b7029 100644
--- a/web/component/ads/view.jsx
+++ b/web/component/ads/view.jsx
@@ -170,9 +170,9 @@ function isScrolledIntoView(el) {
   return isVisible;
 }
 
-async function injectAd() {
-  // don't inject on firefox android
-  if (isFirefoxAndroid) return;
+async function injectAd(shouldShowAds: boolean) {
+  // don't inject on firefox android or for authenticated users or no ads on instance
+  if (isFirefoxAndroid || !shouldShowAds) return;
   // test if adblock is enabled
   let adBlockEnabled = false;
   const googleAdUrl = 'https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js';