i landscape company here had this happen: he got a call for lawn renovation. the job was earate, seed, and starter fert. the client had thier own seed, which they ordered online. so, it was customer supplied seed. the job was to be done "next week." the client will be away next week, so she gave the landscaper the seed in advance. the guy went and did the job, there was not enough seed. he used some of his own seed to finish the job. the customer came back, and saw the invoice , on it was a minimal charge for the exttra seed the landscaper used. she flipped. took him to court for "contaminating" her property with seed she didn't want. the court ruling was, the landscaper will not be paid for the job, furthermore, he will pay another company $900 to remove the top 2" layer of "contaminated" soil, replace it, and seed it.