Our shop has gotten to the point of: 1) either refusing to resurface or drill rubber balls, or 2) giving a used reactive ball to the customer so we don't have to air out the shop for days...
Many times when one of these balls come in it's because someone inherited it from their Dad and it has sentimental value. Sell them a ball cup for $2 and have them display it prominently somewhere else!!!
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notclay
Lane Carter, Strike Zone Pro Shops - Salt Lake City, Utah
"The problem is no that there are problems. The problem is expecting otherwise and thinking that having problems is a problem." ~ Theodore Rubin