We are experiencing a huge infestation of ladybugs all over our house. These are NOT the cute ones you see in the garden in the spring. These are gross and clump together. I vacuum up the ones I can reach all the time, but does anyone have suggestions on how to get rid of the ones on the ceilings? We have a really higher foyer ceiling and I don't have a ladder tall enough. Is there something I can spray up there that will kill them and make them fall to the ground?