Did you have the bathroom tile sprayed or replaced?

I did have a pest control exterminator come to spray both sides of the duplex right after I purchased the place.Her side compared to the neighbors is terrible.

I ordered a spray for her unit but she continued to have an issue with the insects and she called terminex on her own and they said they were bed bugs.

Some to paint some to spray some to side.

As pictured, you get to pull a plugged-in washer out of the hole, with water spraying around, to get to the shutoff valves and unplug it.If possible, try to have a regular outlet (120 V) available for the countertop as well - especially if the ironing board will fit in the laundry area. 

I went to the property and sprayed for ants inside as well as outside.

I went to the property and sprayed for ants inside as well as outside.

Train all tenants where the valve is in the basement and use a spray paint can or some sort of sign with an arrow to show them where the valve is. 

Then use some DIF Wallpaper Stripper to spray onto the wall (have heard you can also use fabric softener and water mix).

I haven't come across a whole lot of information about this online, and opinions vary from pumping the whole duct system full of concrete, to putting spray foam in the ducts about a foot from each return and then filling the return with concrete in that small area so its capped off.Just curious if anyone has any experience with this, or has ever heard of a contractor talking about this, etc etc etc.Thanks!