technically, you can't apply any substance to the bottom of your slide shoe that may leave a residue on the approach. even if you wipe off the excess easy-slide from your shoe there is no way to measure the trace amount of the product left on your shoe. if you are a bowler and care about your own safety and the safety of your fellow bowlers do not apply easy-slide to the bottom of your slide shoe. if you are a bowler and you are competing on my pair you would be wise not to apply this type of product on your shoes. i will apply any and all pressure to make you change your mind and discontinue it's use.
in my opinion bowling center managers and owners do not spend enough time, effort, and money on the approaches in their centers. how can they expect customers to come back when something like this can cause/aggravate a physical problem ?
every time i go bowl whether it's open play practice, league, or a tournament, i thoroughly inspect the approaches and change my soles and/or heels as needed. my 3G tour ultra's have six(6) different soles and six(6) different heels for just this purpose. i also have a slide sock just in case.