"The Anti CockRoach Repeller Prank application works by generating Ultrasonic waves (out of audible range) that most Cockroach find repugnant. This will prevent you from getting bitten by Cockroach and other insects. The pitch of the sound is so high that most humans will not hear anything.
Only female Cockroach bite humans and animals. They are attracted by light, body odor, lactic acid, carbon dioxide and heat.
It is not 100% guaranteed but will repel most of Cockroaches biting you ."

// Option A //

To download Anti Cockroach Repellent mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Anti Cockroach Repellent mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Anti Cockroach Repellent from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Anti Cockroach Repellent in HappyMod App.