- Tenants who pay rent in cash
- New rental applicants who try to avoid background checks
- Windows covered or blacked out, or extra effort to ensure windows and doors are covered or reinforced
- Little or no traffic at a residence during the day but frequent traffic late at night or at odd hours
- Installation of extractor fans (especially in garages / sheds)
- Fan or pump type noise coming from the premises
- Noticeable hoses and pipes near windows or doors
- An unusual chemical smell and strong odours – rotten egg smell, ammonia or solvents
- Burning of rubbish
- Excessive waste or rubbish, as meth production generates huge amounts of waste
- Excessively dirty property
- Laundry not done
- Dirty dishes everywhere
- Damage to internal walls and doors
- Stains around toilets and drains
- Burn marks on floors
- Burn marks on the lawns, as the waste is toxic and kills vegetation
- Light fittings missing, as these are used to smoke ice