Will Seafoam stay in the filter canister?

[JOblenes]

There have been a few threads on here recently about the Seafoam product. I was in a local parts store on the weekend and they have a brand new display setup with all of the Seafoam products (its obviously making a comeback). I bought two cans and threw them in the tank which was only about 1/8th full. I'm not sure it made a big difference to the engine, which I believe has picked up a bit of a knock. I was thinking about what a few other posters mentioned and was considering filling the filter canister with the stuff, which it also says to do right on the can. So the question I have is if I fill the filter canister then go to start the truck will the stuff stay in the canister or will the low pressure fuel pump just pump it all back into the fuel tank before much goes to the injectors?