Put 2 gallons of water into the garden sprayer.
100 ml of epson salts (big jar from Costco)
50 ml of miraclegrow
100 ml of organic chemical Home Defence spray
30 ml Neem oil
30 ml Tea oil (from Costco)
one squeeze of dish soap.
The organic chemical (synthetic pyrethins) does most of the work. Do not spray flowers. The epson salts gives the little slugs the flu. Neem and Tea oils slow down the fungus. Soap mixes it all.
Spray often. This is weak stuff, but it delays the worms in the apples so you can eat them You just can't store them very long.
Absolutely nothing gets out if you are careful when you spray. Failure to spray is a disaster, you might as well pave everything over. :)