3 Ways To Fill Plastic Holes
If you cannot fit cardboard between the plastic, like if the hole is in a gas can, this can still work, but it may not have as solid of a hold. Wear plastic gloves to avoid getting super glue stuck on your hands. Other powders like sawdust or chalk powder may also work. You can try mixing colored powder or food dye with the baking soda to resemble the color of the plastic more closely....