Or try this remedy from garden writers association hall of famers doc and katy abraham authors of the green thumb garden handbook.
Black insects under siding.
Siding is purposely put up loose for expansion and contraction and so your duster tip or injection straw usually fit nicely.
Mix 1 2 cup buttermilk and 4 cups of wheat flour with 5 gallons of water.
Dirt and insect secretion stains however can adhere to vinyl siding attracting molds mildews and algae.
What it looks like.
These bugs are shaped a bit like a stink bug and grow up to 3 4 inch long.
They are a reddish brown color and usually have a bright yellow or orange underside with black patches.
This is the spot i ll dust most often for pests like scorpions or occasional roaches for ants i most often use a non repellant spray such as arilon termidor or other and don t even worry about getting a product up and under.
That s the sound of your siding being destroyed.
Vinyl siding is very popular due to its durability and simple maintenance.
Insect stains and other debris can be removed by simply cleaning vinyl siding with household cleaners.