diff --git a/experiment/ci-janitor/main.go b/experiment/ci-janitor/main.go
index 10bd46a1fcec..869d337833bd 100644
--- a/experiment/ci-janitor/main.go
+++ b/experiment/ci-janitor/main.go
@@ -42,18 +42,15 @@ var (
 		"kubernetes-scale",  // Let it's up/down job handle the resources
 		"k8s-scale-testing", // As it can be running some manual experiments
 		// PR projects, migrate to boskos!
-		"k8s-jkns-pr-gce",
-		"k8s-jkns-pr-gce-bazel",
-		"k8s-jkns-pr-gce-etcd3",
-		"k8s-jkns-pr-gci-gce",
 		"k8s-jkns-pr-gci-gke",
-		"k8s-jkns-pr-gci-kubemark",
 		"k8s-jkns-pr-gke",
-		"k8s-jkns-pr-kubeadm",
 		"k8s-jkns-pr-kubemark",
 		"k8s-jkns-pr-node-e2e",
 		"k8s-jkns-pr-gce-gpus",
 		"k8s-presubmit-scale",
+		// k8s-infra projects, can't be cleaned by k8s-prow serviceaccounts
+		"k8s-infra-e2e-scale-5k-project",
+		"k8s-infra-e2e-gpu-project",
 	}
 )
 
diff --git a/scenarios/kubernetes_janitor.py b/scenarios/kubernetes_janitor.py
index 3d3f9f365331..2fbd30603dde 100755
--- a/scenarios/kubernetes_janitor.py
+++ b/scenarios/kubernetes_janitor.py
@@ -92,15 +92,9 @@ def clean_project(project, hours=24, dryrun=False, ratelimit=None, filt=None):
     # k8s-jkns-pr-cnry-e2e-gce-fdrtn
     # cleans up resources older than 3h
     # which is more than enough for presubmit jobs to finish.
-    'k8s-jkns-pr-gce': 3,
-    'k8s-jkns-pr-gce-bazel': 3,
-    'k8s-jkns-pr-gce-etcd3': 3,
-    'k8s-jkns-pr-gci-gce': 3,
     'k8s-jkns-pr-gci-gke': 3,
-    'k8s-jkns-pr-gci-kubemark': 3,
     'k8s-jkns-pr-gke': 3,
     'k8s-jkns-pr-kubeadm': 3,
-    'k8s-jkns-pr-kubemark': 3,
     'k8s-jkns-pr-node-e2e': 3,
     'k8s-jkns-pr-gce-gpus': 3,
 }