Time and water waste, you can create a mess around the road sign that will require more cleaning.
To remove tough stickers on the road signs, you need a source of high pressure water to help you remove stickers from a stop sign or any sign. Direct the hose to the sticker, and start scrubbing it lightly to clean street signs. Repeat the step if needed.
If the sticker is really glued on, pouring boiling water on it would be ideal. Bring boiling water to the sign to allow the glue to loosen. Also make sure water is in contact with every part of your stickers to remove it without effort.
