For example, at higher temperatures, dimethyl carbonate undesirably methylates phenol to give anisole. It has also been used to remove undesirably high concentrations of fluoride. This can sometimes produce uncomfortable or undesirably intense experiences. This made the diapers undesirably heavy and bulky. Pure lead is undesirably soft for casting bullets not requiring such expansion. Abortifacients for animals that have mated undesirably are known as "mismating shots". Because the computation of requires division, it is undesirably expensive on most computer hardware. Since large drivers require undesirably large cabinets, most subwoofer drivers have large excursions. It can undesirably round-out models. Some of these new designs made picks undesirably expensive.