GRADE 9 Agriculture HYGIENE PRACTICES – DISINFECTING CLOTHING AND HOUSEHOLD ARTICLES Notes
DISINFECTING CLOTHING AND HOUSEHOLD ARTICLES
Subject: Agriculture — Topic: Hygiene Practices — Subtopic for students (age 14, Kenya)
Why disinfect?
Disinfecting kills germs that can make people sick. In farms and homes we disinfect clothes and tools to stop disease spreading between animals and people, and to keep your family healthy.
When to disinfect
- After someone in the house is ill (fever, diarrhea, cough).
- After contact with sick animals, animal blood or body fluids.
- After cleaning up spills (e.g., blood) or dirt from farm tools.
- Regularly for kitchen cloths, masks, bedding and frequently touched items.
What you need (easy local list)
- Soap or laundry detergent
- Household bleach (Jik) — commonly 3.5–5% sodium hypochlorite
- Hot water (from jiko or electric kettle)
- Buckets, basin, scrub brush, cloths
- Gloves (rubber) and old cloth/apron — ask an adult to help with chemicals
- Sunlight and drying line (jua helps kill germs)
Safe basic steps for clothing
- Remove dirt first: Shake off dry dirt outside. Rinse heavily soiled parts in water.
- Wash with soap/detergent: Rub and wash normally in warm or hot water if possible.
- Disinfect using one of these safe methods:
- Bleach soak: Use dilute Jik (see dilution table below). Soak for about 10 minutes, then rinse well with clean water.
- Boil: For small items (socks, cloth masks) boil in clean water for 10 minutes. Use an adult to help.
- Hot wash: Use laundry machine at 60°C if available.
- Sun dry & iron: Dry in strong sun for several hours and iron clothes on high heat — heat and UV from sun kill many germs.
- Store clean clothes in a clean place or cupboard. Keep soiled laundry separate from clean.
Safe basic steps for household articles (plates, buckets, surfaces)
- Clean first: Wash off dirt and grease with soap and water. Disinfectants work best on a clean surface.
- Disinfect: Apply diluted bleach (see dilution table) or another recommended disinfectant. Make sure the item/area stays wet with the solution for at least 10 minutes.
- Rinse and dry: For eating surfaces and utensils, rinse with clean water after disinfecting and dry in sun if possible.
Important: dilution & examples
Most household bleach (Jik) is about 3.5–5% sodium hypochlorite. To make a safe disinfecting solution for surfaces (about 0.05%):
- Rule: 1 part Jik to 99 parts water (1:100) ≈ 0.05% solution.
- Examples:
- 1 litre water → add 10 ml Jik (≈ 2 teaspoons)
- 5 litres water → add 50 ml Jik (≈ 3.5 tablespoons)
- 20 litres water → add 200 ml Jik
- For heavy spills (blood): use stronger (about 0.5% = 1:10) but only with adult help and gloves. For 1 litre water add 100 ml Jik.
Do NOT mix bleach with vinegar, ammonia or other cleaners. This makes dangerous gases.
Safety tips (very important)
- Always use gloves and work in a well-ventilated area. Ask an adult to help with chemicals.
- Keep bleach out of reach of children and animals. Store in a labelled container.
- If bleach gets on skin or in eyes: wash with lots of clean water and tell an adult. Go to a clinic if it hurts.
- Test bleach on a small spot first — it can fade colours. For coloured clothes use boiling or hot washing instead.
- After disinfecting, dry items in the sun and iron if possible — extra kill-step for germs.
Quick checklist (copy this!)
✔ Clean dirt first • ✔ Wash with soap • ✔ Disinfect (diluted Jik or boil) • ✔ Rinse & dry in sun • ✔ Iron if you can • ✔ Store clean
Note: This guide is for basic household hygiene in Kenyan homes and farms. For serious contamination or illness, tell an adult and contact a health worker or clinic.
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Visual tip: Sun + clean washing line = easy disinfection. Boil small items if not safe to use bleach.