the way it was explained to me...
the latex backing has memory. it wants to go back toits original shape but needs help. the ice cube wets the backing which softens the latex and as it dries it returns to its original shape. using a steamer or hot water does the same thing. it softens the latex backing so it can go back to its original shape.
i had a church that changed the pews around after 20 some years. they used a coffee pot to heat water and poured it on each spot and used a shop vac to soak up the water. all of the indents came out. then i came in and cleaned the water spots along with all the carpeting.
the latex backing has memory. it wants to go back toits original shape but needs help. the ice cube wets the backing which softens the latex and as it dries it returns to its original shape. using a steamer or hot water does the same thing. it softens the latex backing so it can go back to its original shape.
i had a church that changed the pews around after 20 some years. they used a coffee pot to heat water and poured it on each spot and used a shop vac to soak up the water. all of the indents came out. then i came in and cleaned the water spots along with all the carpeting.