Do wasp nests die over the winter in Tampa?
Usually, but not always. UF/IFAS describes Florida colonies dying as winter arrives, while UC IPM notes that in very mild winters some yellowjacket colonies survive for several years and grow quite large. With Tampa winter lows averaging 52 degrees, that possibility is real. If a nest is still busy in January or February, do not wait it out.
How big do Florida yellowjacket nests get?
Larger than most people picture. UF/IFAS documented a nest with over 2,800 wasps present and an aerial nest about 8.2 feet in height. Texas A&M has recorded multi-year southern yellowjacket colonies in the southern states measuring six feet across. Those are exceptional cases, but they explain why an unfamiliar nest here should be assessed rather than approached.
How do I find a ground nest before I mow over it?
Watch, do not walk. Stand well back in mid-morning and look for wasps converging on one point in the grass or a bare patch. One documented southern yellowjacket nest sat 22.5 centimeters below the surface, so there is nothing visible to see except the traffic. Mark the spot with a flag from a distance and keep the mower away.
Are wasps in my pool cage a bigger problem?
They are, mainly because you cannot walk away. A screened enclosure keeps a defensive wasp in the same space as the people it is defending against, and the frame corners and soffit seams make sheltered nest sites out of the rain. With 50 inches of rain a year, a Tampa pool cage is one of the driest sheltered spots on the property. Check the frame joints and screen door track monthly, and treat a comb while it is still small.
What is the giant wasp digging in my sandy yard?
Most likely a cicada killer, and it is close to harmless. These are solitary wasps that dig individual burrows in bare, well-drained soil, defend no colony, and disappear within weeks. The males that buzz at you cannot sting at all. There is no group response when a burrow is disturbed, which is what separates them entirely from yellowjackets.
Should I spray the nest myself or call someone?
Spray only a small open comb you can see completely, at night, standing on the ground. Anything underground, inside a wall, inside pool cage framing, or larger than a softball is a different job with an unknown number of wasps in it. Store products are made for exposed nests, and using one on a hidden colony mostly makes it defensive.
How long until the wasps stop after treatment?
Expect two to four days for a dusted nest, and expect it to look worse before it looks better. Foragers that were away during the application come back, pick up product at the entrance, and carry it in, which means visible traffic continues for a while. If wasps are still moving in and out after a week, that is the moment to ask about a return visit.
Who is responsible in a rental?
A colony inside the building envelope, in a wall, soffit, or under a slab, is normally the owner's responsibility, because the wasps got in through the structure. A comb on a balcony rail is closer to routine upkeep. Report it in writing with a photo and the date, especially between August and October, when colony size and sting risk both peak.