Ben from Austin, Tx writes
1 minute? 30 minutes or permanently?
The Pro Foam Foaming Concentrate when used with an insecticide in a wall void will last an unspecified period of time, but definitely not permanently. This is not a hardening foam like an insulation. This is only used as an agent to help the insecticide you want to have farther reach. The foam will slowly start to dissipate after it's been applied, based on the mix rate you used. It likely would be dissipated after an hour or so or potentially less.
Answer last updated on: 10/27/2017