Del. Code tit. 3, § 2116

The Secretary may issue and enforce a written or printed “stop sale, use or removal” order to the owner or custodian of any lots of commercial fertilizer or soil conditioner to hold such commercial fertilizer or soil conditioner at a designated place when the Secretary finds that it is being offered or exposed for sale in violation of any of the provisions of this chapter, until the law has been complied with and said commercial fertilizer or soil conditioner is released in writing by the Secretary, or said violation has been otherwise legally disposed of by written authority. The Secretary shall release the commercial fertilizer or soil conditioner so withdrawn when the requirements of this chapter have been complied with and all costs and expenses incurred in connection with the withdrawal have been paid.