Sort:  

I just did this on my cultures which had an aphid situation that got out of control; I ended up using 1500 lady bugs. I really wish I had taken pictures to post the before and after, but I was in such a rush to get it done as I didn't want the eggs to hatch and become larvae. If you're not in a rush I recommend using purse.io with bitcoin as I could have gotten 1800 for the same price that I paid for 1500, but as mentioned time was of the essence.

They started breeding as soon as I took them out of the fridge, and soon went to town devouring all the eggs in the next days. The heat was too much for them so many of them fled but hopefully left behind a fair amount of their eggs behind.

Neem is great as a preventive measure and a must when transplanting but it needs to be re-applied when it rains or every 2 weeks, which can be tiresome when dealing with large acreage of crops. But I agree its still one of the best solutions, though in the most healthiest of gardens/farms your soil and the surrounding ecology should be able to support the proper microbiology and beneficial insects to ensure a good yield.

I use this brand with success on several farms now:

Coin Marketplace

STEEM 0.16
TRX 0.15
JST 0.030
BTC 58984.04
ETH 2551.66
USDT 1.00
SBD 2.35