Bio grow and SB Plant Invigorator

[Jayb]

I'm going to try these this year I just wondered if anyone has tried them and if they are any good?

Claims include to reduce blight by 80%,  banish slugs and snails, sound a bit too good?
Bio-grow http://www.marshalls-seeds.co.uk/bio-gro-plant-health-invigorator-250ml-pid4827.html

And

SB Plant Invigorator  www.sbproducts.co.uk non toxic with no harvest interval, controls several pests and mildew

I haven't found out much about the one form Marshalls yet, but SBPI is apparently safe to bees and ladybirds. 

[Jayb]