Cold pressed virgin NEEM OIL SPRAY MIX 300 ml concentrate with emulsifier to make up your own Neem Spray up to 30 liters spray solution. No need to add anything but water. How to: Neem oil solidifies below 20 degrees C. Warm the bottle to room temperature first ( apprx 25 C) to make it runny. For plants, mix : 1 part oil + 25 ( or more up to 100 parts water depending your application) parts lukewarm water (around 25 to 30 degrees C). 

For pets and horses, mix : 1 part oil + 10 parts water. Effective for up to 3 days after mixing with water. Virgin Neem Oil is a natural powerful antifungal and insect repellent. Avoid eye contact. Store in a cool and dark place.

 How to Apply Neem Oil Spray:  Before spraying a an entire plant, test a small area on the plant and wait 24 hours to check to see if the leaf has any damage. If there is no damage, then the plant should not be harmed by the neem oil. Apply neem oil only in indirect light or in the evening to avoid foliage burning and to allow the treatment to seep into the plant. Also, do not use neem oil in extreme temperatures, either too hot or too cold. Avoid application to plants that are stressed due to drought or over watering. Using neem oil insecticide about once a week will help kill pests and keep fungal issues as bay. Apply as you would other oil-based sprays, making sure the leaves are completely coated, especially where the pest or fungal problem is the worst.
It can be diluted up to 1 : 100. There are no hard and fast rules, only guidelines.

Store in a cool and dark place, do not leave exposed to direct sunlight.

( Please note that the contents of the bottle are minimum 300 ml. Once the cap is opened, bottle expands, bottle's capacity increases hence the level drops, but the amount of the oil remains same.)