I would like to make the leap to an easier system for applications and a ride on seems to be the answer. My concern is that I don't want to have to completely change my program or products in order to accomplish this. Can liquid preemergent products (specifically pendimethalin and simizine) be sprayed without phytotoxicity, staining, or damage to the pump. I know that granular products are an option but I'm dealing with warm season grasses that don't need fertilization during some of the times my preemergents are applied. Also, can ester and amine 2 and 3 way products be used without damage to turf. For some reason I'm just not comfortable with the high concentration of a.i. with the low volume sprayers. Thanks.