In Florida to can attain the limited pesticide applicators license. You must document 3 years in the profession, have 400k liability insurance, take an hour course and pass the exam. This can be done at your local extension office. This license allows you to used CAUTION ONLY LABEL pesticides and only on shrubs. You may not advertise this service and you must use a MANUAL backpack sprayer. This also allows you to use Roundup which you cannot do without this license. Serious fines and results will come from the Bureau of Entomology. You can apply no pesticides to any lawn, granular, liquid or otherwise. Pesticides are defined as fungicides, insecticides, herbicides, etc. <p>If you wish to become a Florida State Certified Pest Control Operator, you must work under a PCO's license for 3 years, then take the rigorous exam (4 hrs is allowed) Assuming you pass the exam (with a 12% passing rate, you can perform any of the above services. PCO categories are Lawn and Shrub, General Household Pests, Termites and Fumigation.<p>Hopes this helps.<p>Bill Phagan<br>PCO