Auto Glass shops that waive deductibles for the most part cut corners on the quality of the products they install.
Auto Glass shops that ask you to tell the insurance company that there are other parts damaged in order to save your auto glass deductible. This is insurance fraud, and could wind you up in trouble.
Shops who provide free steaks to get your business, have to give something away to get customers because of a poor quality rank they have to offer these things to survive.
Never get in your car and attempt to put your fingers into the blue glue. This is urethane, and a common person will not have the products to remove this from you or your clothes.