Gary
Hi Gary,
You're right. Whatever chemicals you put in that vaccum cleaner will be
dispersed throughout the indoor air of your house not only while the vaccum
cleaner is being used but also while the vaccum cleaner is sitting in a
closet. So one should be cautious. If one must do this thing, add the
pesticide to your vaccum cleaner while outside your house, throw away the
bag before bringing your vaccum back inside, and run your vaccum cleaner
outside your house to remove any residual pesticides that remain in the
vaccum cleaner.