Barry from Tucson, Az writes,
Do I need to drill holes in patio slab if I can pour around the divider between patio and house slab?
My patio slab is not part of the post-tension slab the house is built on. The divider is a black foam-like material that is loose but cannot be easily pulled out due to overhang of stucco wall directly above. I think I can pour termiticide solution in this slot around the patio perimeter without drilling holes.
You can do this if you choose, however the reason it is recommended to drill and close the holes is so you can prevent water from getting into the chemical that you apply. Also, usually the crack between the patio and house slab is not large enough to pour 4 gallons per 10 lineal feet along the house. If you did use the crack, you need to make sure you can patch it adequately as to not let water down the crack and dilute the chemical, and also you need to make sure you get the 4 gallons per 10 feet down the crack as recommended.
Answer last updated on: 11/06/2011