Take the foam out and put it in a decent quality black bin bag screw the opening up so it makes a hole and then put your vac hose in the hole switch extractor on it will retrieve moisture then apply urine contamination treatment to foam allow dwell and then do bin bag trick again, foam must be dry before replacing.Shaun
I was shown that trick 15 years ago by iicrc trainer Noel frank but I think mikes idea is better.Shaun