Skye - got the metal comb (those plastic things are silly for fine children's hair) and this is what we use most nights with the conditioner and wet hair... I also have a similar concoction that i spray on her hair which is lavender, eucalyptus and tea tree oil mixed with conditioner and water in a spray bottle - but googling helped me find this one....

All Purpose Lice Deterrent Essential Oil Blend

Blend the following essential oils in a 10 mL brown glass bottle.
2 mL myrtle (Myrtus communis)
1 mL rosemary (Rosmarinus officinalis)
1 mL eucalyptus (Eucalyptus globules)
1 mL lemon (Citrus limon)
1 mL geranium (Pelargonium graveolens)
2 mL lavender (Lavandula angustifolia)
2 mL tea tree (Melaleuca alternifolia)

Store in a cool place out of the reach of children. 20 drops equals approximately 1 mL.

Lice Deterrent Spray

Mix 2 mL of the deterrent blend in 120 mL distilled water. Pour into a spray bottle. Shake well before each use. Avoid contact with eyes. Spray on the nape of the neck, behind ears, and the top of the head during lice outbreaks. Repeat throughout the day
Nic i am going to try the vinegar tonight

Ladybirdflies - how much is a bottle? i havent seen this one, but we have a terrible health food shop near us, so thats probably why!

Thanks for your replies