1. stimulants - such examples would be cocaine, caffeine and methamphetamine
2. depressants - such examples would be alcohol and marijuana
3. analgesics - such examples would be opiates, aspirin, ibuprofen, paracetamol
4. antibiotics - such examples would be amoxicillin, erythromycin
5. tranquilizers - also known as barbiturates, such examples would be valium, xanax
6. hallucinogens - such examples would be LSD, psilocybin mushrooms
A restaurant should be cleaned before the open and when they close for the day because then they wont have to worry about bugs. This regulation is in place because then they wont have to worry about bugs.
hope this helped :)
alisa202