i am ordering my new lawn mower and i am thinking about putting a grass catcher on it. i have about 3 acres for my yard. i just bought the house and i have never had a yard before. i am a real newbie, well i bought the house a year and a half ago. i rake when the grass is high , and it is a pain. i usually leave the clippings on the yard but a friend said it would be better if i used a grass catcher. kubota uses a protero pro vac 18 that Holds 14 bushels and it looks pretty nice. also when do i use weed killer. my yard has a lot of weeds. i live it central Pa. i do have a 50 gallon sprayer with a 12 foot boom that i bought thinking it would be good to use for fertilizer. what and when should i use with the sprayer?