These landscapers have to take trainings and pass a test.
Must be ready-to-use in a trigger spray bottle. Non-aerosol. May not contain glycol ethers, phthalates, monoethanolamine or alkyl phenol ethoxylates; pH 6-10. No chlorinated compounds. No chemicals known to the state of California to cause cancer (as listed under Prop 65).
An Energy Star bulb can save $40 to $135 in electricity over its lifetime. LEDs last longer than incandescents and fluorescents (21 years or 25,000 hours, based on normal use).