Disclaimer: This post was originally posted by Hero Member, mjb8743. This user is located in Zone 7, South NJ, Garden State. This was originally posted on July 1, 2014.
Mosquitoes will not lay eggs unless they see water. This means two things:
1- They will not enter the overflow hole. In fact, blocking this with anything runs the risk of it clogging and backing the water up into the media. There's potting mix and roots in the reservoir (and Mosquito Bits), and they can and will cause a clog.
2- Having any depression on the cover that can collect water will allow egg-laying. Those buggers can lay eggs in a thimble. That and the fill tube are the greatest concern.
Aline's idea of using a knee high over the tube is great... I've been using squares of tulle held on with the velcro tie 'belts'. I think some knee highs are in my future.
So... make sure your box is domed and there's no standing puddles, toss in a few Bits, and try the stocking idea for the fill tube.
Mickie
