diff --git a/application.rb b/application.rb
index 11df8a7..a150cd6 100644
--- a/application.rb
+++ b/application.rb
@@ -3,6 +3,7 @@
 require 'sinatra'
 require './lib/partials'
 require './lib/string'
+require './lib/constants'
 require 'haml'
 require 'sass'
 require 'compass'
@@ -42,6 +43,18 @@
   scss :'stylesheets/screen'
 end
 
+# Show lib/robots_txt_to_exclude_all.txt
+#
+# Only show on non-production sites
+get '/robots.txt' do
+  if is_production?
+    redirect not_found
+  else
+    content_type 'text/plain', :charset => 'utf-8'
+    File.read(File.join('lib', 'robots_txt_to_exclude_all.txt'))
+  end
+end
+
 get '/' do
   protected_unless_disabled!
 
diff --git a/lib/constants.rb b/lib/constants.rb
new file mode 100644
index 0000000..e57c3fe
--- /dev/null
+++ b/lib/constants.rb
@@ -0,0 +1,7 @@
+# Constants
+
+HTTP_STATUS_OK = 200
+HTTP_STATUS_BAD_REQUEST = 400
+HTTP_STATUS_NOT_FOUND = 404
+HTTP_STATUS_BAD_REQUEST_CONFLICT = 409
+HTTP_STATUS_INTERNAL_SERVER_ERROR = 500
\ No newline at end of file
diff --git a/lib/robots_txt_to_exclude_all.txt b/lib/robots_txt_to_exclude_all.txt
new file mode 100644
index 0000000..77470cb
--- /dev/null
+++ b/lib/robots_txt_to_exclude_all.txt
@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: /
\ No newline at end of file
diff --git a/spec/integration/robots_txt_spec.rb b/spec/integration/robots_txt_spec.rb
new file mode 100644
index 0000000..718100a
--- /dev/null
+++ b/spec/integration/robots_txt_spec.rb
@@ -0,0 +1,23 @@
+require_relative '../spec_helper'
+
+describe "/robots.txt" do
+  before { @robots_path = "/robots.txt" }
+
+  it "shows on development" do
+    settings.environment = "development"
+    get @robots_path
+    expect(last_response.status).to be HTTP_STATUS_OK
+  end
+
+  it "shows on staging" do
+    settings.environment = "staging"
+    get @robots_path
+    expect(last_response.status).to be HTTP_STATUS_OK
+  end
+
+  it "doesn't show in production" do
+    settings.environment = "production"
+    get @robots_path
+    expect(last_response.status).to be HTTP_STATUS_NOT_FOUND
+  end
+end
\ No newline at end of file