Possible Clues:

• Treated the lawn, in a way
• Given some whitewash, being restricted without it
• Taken outside, setter's prepared to catch birds
• Conditioned the lawn
• Treated a lawn, perhaps
• Like many cared-for lawns
• Like some treated lawns
• Treated the soil, in a way
• Treated, as soil
• I'm taken outside, dressed in white?