First cicada killers, now flies!

stephcheff

LifeTime Supporter
Mar 23, 2010
11
San Diego County, CA
I've been having major problems with my backyard oasis. The pool area is landscaped, and backs to towering trees: oaks, maples, and poplars. This year, we have had an infestation of cicada killer wasps. They are bothersome, but harmless, and mostly active in the morning, before we are out by the pool. They leave mounds of dirt from the tunnels they excavate in the lawn and landscaping. Their numbers seem to be declining now, but now we have an infestation of flies which is even more of a nuisance than the cicada killers. My web research suggests that the flies are a natural parasite of the wasps-- or, at least they like to feed on the dead cicadas the wasps drag into their burrows. One dead cicada can host 50 maggots-- so you can imagine the population explosion of flies we have had. The flies really put a damper on a party we hosted last night. The best we could do was use fans to try to keep the flies off the food.

Has anybody else had this problem? What did you do? I am thinking that I must aggressively treat the wasp burrows with insecticide powder next year. Any other suggestions?
 

anonapersona

TFP Expert
LifeTime Supporter
Nov 5, 2008
2,598
fill plastic bags with water and suspend them at the edges of the dining area. Something about a bag full of water in the air disturbs flies and keeps them away. Lots of restaurants with outdoor patios do this. No idea why it works.
 

257WbyMag

TFP Expert
LifeTime Supporter
Feb 23, 2008
5,061
Denton, TX
anonapersona said:
fill plastic bags with water and suspend them at the edges of the dining area. Something about a bag full of water in the air disturbs flies and keeps them away. Lots of restaurants with outdoor patios do this. No idea why it works.
I have always wondered why places did that. Now I know. :-D
 
G

Guest

It is supposed to have an effect on their compound eyes. Messes the little buggers up!
 

anonapersona

TFP Expert
LifeTime Supporter
Nov 5, 2008
2,598
Our favorite waterfront restaurant here in The Woodlands does not have these bags of water on the patio yet, though I keep telling them to try it.
 

anonapersona

TFP Expert
LifeTime Supporter
Nov 5, 2008
2,598
Yes, exactly. Often seen hanging at the perimeter of dining patios, spaced between each support or column.