When employees are at work, many people gather in the toilet to play with their mobile phones, smoke and chat, so this phenomenon should be put an end to. How to write this notice?

Recently, it was found that some employees used the toilet time to smoke, chat and play with mobile phones during working hours, which seriously violated the company's rules and regulations. If a similar situation is found next time, it will be treated as absenteeism. I hope everyone will consciously abide by it. As for violating the company system, you know better than me. I think it's nothing to write like this! I'm just a little embarrassed to learn!