DubiDrops
1 oz of DubiDrops by weight produces 1.8 gallons of “water chunks”. The absorption is ~178x its weight in water so use plenty of water. Allow DubiDrops to sit in a container of water for 24 hours to plump up. If after 24 hours, there is no “free” water in the container, this means you did not add enough water and the DubiDrops can take in more water. Add more water (submerge) and let sit. Better to use more water than required for full saturation. Place on a dish and the roaches will extract the water from the drop.
Before and after pictures.