Mud Dauber Wasps
Mud Daubers are Sphecid wasps that are solitary, not social as are honey bees, yellowjackets. These solitary wasps capture prey (spiders, bugs, other insects) which are placed into an individual cell. A mud dauber does not construct cells or nests from paper (salivary solution and wood pulp) as do yellowjackets, hornets and paper wasps, but from mud. During the summer months the Mud Dauber can be seen lighting on the ground at the edge of mud puddles the day after a summer rain. The liquid from the mud puddle is used to build the all too familiar mud cells. These cells (or dirt dauber nests, as some will call them) are built on the exterior of barns, sheds, homes or other structures. These cells can be plastered individually or in rows by a single female wasp. Seeing several cells does not mean you have a colony of mud daubers, since these wasps are not social insects.
Mud Dauber Elimination
A very important part of mud dauber elimination is removal of the cells or
nests. In the Mud Dauber Information section, the food
source of this wasp is mentioned because of its importance. These wasps
are beneficial because they feed on possible pests, bugs, spiders - but the
wasps become a pest when they use our homes as a nesting spot. [If there
is a large population of Mud Daubers in an area, there is a large population of
other bugs and spiders in the same area.]
Removing the nests and eliminating the wasps can be done in one step, in
most cases. Using your hose-end sprayer, broadcast a solution of Cypermethrin
on the exterior of the structure. Liquid concentrates of Cypermethrin
During the summer months you might want to treat the exterior of your home with Demon or Cynoff insecticides, to help prevent re-infestation of wasps and to keep down other pests such as spiders, ants, scorpions, carpenter ants, roaches, centipedes, millipedes - most household pests.