Me and my wife have a small and stragley porch garden that is infested with small gnats. These gnats look like they are breeding in the soil of the plants and the plants look like they are suffering as a result.  We've sprayed the soil with fungucide and pesticides, and while temporarily getting rid of the problem, the plants themselves show very negative health.  We decided to try and put live ladybugs on them and see if there was any improvement.  I bought 1500 live ladybugs through amazon and Hirt's garden supply.  A bit of overkill for 4 plants, but my wife likes ladybugs and even if it didn't work, it would be fun to have thousands of ladybugs living on our porch if even for a short while. 

After a night in the refrigerator hibernating, the ladybugs are sluggish, but 

still moving around.  While still slow, I spread the ladybugs around my plants

 at dusk (just after sunset).  

After waking up a little the ladybugs started to get to 

know their new home