Enormous Long-Lasting Bubble Fluid. Specially formulated for use in Bubble Machines High-flying bubbles Non-staining Non-toxic. Froggys Fog bubble fluids are designed and tested to provide exceptional output from bubble machines. 5 Gallon Pail BIG Bubble Fluid - Enormous Long-Lasting Bubble Fluid Specially formulated for use in Bubble Machines Long Lasting High flying bubbles Non-staining Non-toxic