Disclaimer: This post was originally posted by Full Member, johnthomasc3. This user is located in Chapin, SC - Zone 7. This was originally posted on May 13, 2010.
I thought I would weigh in after reading this thread. I never thought about mosquitoes until reading this, but that might explain why the mosquitoes have been worse lately. I try to go around the yard and make sure there is no standing water but Earthboxes just never registered.
I found the perfect cap for an Earthbox that has no water system. I have a picture attached so you can see everything I am talking about. I used an eleven ounce can of Tresemme Hair Spray. What makes it perfect is it has an inner core that fits snuggly into the tube, while the outer cap acts as a hood. It is black so the color is good for most boxes as the tubes are black.
Now, for the Earthboxes with watering systems. Take a plastic garbage bag. I have used a white bag because it shows up in the picture. Black is probably the best choice since you won't see it very well. Wrap the plastic around the old fill tube and take a razor blade or large scissors and cut down about an inch or two around the tube. This will make a circle of plastic about 2 to 3 inches. The stretchy bags work great. Then take a pencil or pen and poke a hole into the center. Take the tube off the inside of the sensor and stretch the plastic over the clear tube. Now reattach the sensor into the Earthbox and mosquitoes can't get in.
