I can't complain on these foamers that I bought, they're reliable in a sense that you'll get results. The only problem of course is their pumped manually that will take your time but overall they get the job done.
I have used this unit to inject a foam mixture into the voids of a concrete block foundation. The active ingredient used was Bora Care. I found the unit to be of strong solid construction and useful in the foam mode as well as the spray mode. The unit comes with an extension tip which was very handy to apply the foam into the drilled hole in the concrete blocks. I would recommend this unit to anyone with a concrete block foundation. Incidentally, my termites gained access via the voids in the concrete blocks. Don't forget to shake the mixture in the unit when foaming.
The unit is well designed and constructed. But the foam mode was of no use to me. I wanted to apply foam to structural framing by cutting small holes in drywall. The foam only oozes out so this didn't work. If there is some way to shoot foam a couple feet, I found no directions for how to accomplish this.
Instead I just used the sprayer. But all the spray nozzles shoot straight ahead so I had to rig up a ninety degree turn with tubing, stiff wire, and duct tape. This worked fine using the red spray head supplied.
What would be best would be to include or buy somewhere a 1/4" dia. or less spray nozzle that shoots at 90 degrees. This would enable drilling only small holes which are easier to patch than larger cutouts.