We have a 1970's house and noticed that we have about 10 to 15 1/2" to 1" slit openings at the bottom of the brick wall where it meets the concrete floorings foundation. We noticed that there have been wasp flying in and out of them and now they are coming into our bathroom. My husband treated 3 of the slits with wasp killer and I saw on DIY network last month about sealing in these slits which i think they called them air vents, should we fill all of the slits with mortar to keep insects and other small rodents out? We also noticed that cold are is coming out of slits and we have our air condition running.
I hope someone can help us out.
Thanks
I hope someone can help us out.
Thanks