BANGBANG 250 is a 500mL concentrate of fish protein + egg protein + blood that makes a total 5L final spray once added to 4.5L of water. It treats up to 250 young planted seedlings, based on about 20ml per seedling.  It's protection shield lasts 4-6 weeks. 

For an investment of around 18 cents per tree this repellent will improve your trees' chances of survival! 

If you were to pre-spray your seedlings when packed in bulk before planting then the spray will go alot further and protect around 500 seedlings.