Home kit for leak check and recharge?

I have a 3 year old Refrigerator that was repaired last year for a leak where my helper, while removing ice (defrosting) accidentally poked a hole in the freon circuit. It worked fine for 3 months then developed another leak near the compressor....it was repaired also and recharged...... that lasted about 4 months now it appears we have another leak somewhere..... I am getting sick of this and wondering if there is a Home leak/sealant..(lke STOPLEAK for radiators in cars) then a canister of freon to recharge it..... The repair are about $30 to $50 each....so I figure ONE MORE TIME......(by the way I live in the Philippines now...so now you know why they call this a 3rd world country...you cannot trust anything or anyone to not rip you off)